CN113175069A

CN113175069A - Detection method and equipment for sewage pipeline

Info

Publication number: CN113175069A
Application number: CN202110472306.7A
Authority: CN
Inventors: 孟庆龙; 李景强; 李新朋; 张长林; 朱士伟; 董小明; 王博; 张金山; 闫浩; 武文波
Original assignee: Beijing Municipal Construction Co Ltd
Current assignee: Beijing Municipal Construction Co Ltd
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-07-27

Abstract

The application provides a method and equipment for detecting a sewage pipeline, which are used for trimming an inspection well of the sewage pipeline to be modified; carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified; when the internal condition of the sewage pipeline to be modified meets the construction conditions, performing pipeline modification operation; detecting the construction state of a construction area of a sewage pipeline to be modified in the process of executing pipeline modification; when the construction state indicates that the construction of the construction area is qualified, checking and detecting the transformed pipeline; construction under satisfying construction conditions is confirmed through initial detection to be under, construction operating personnel's security is improved, and utilizes the construction state to detect in order to guarantee the normal clear of construction, checks and accepts the pipeline that the transformation was accomplished at last and detects to confirm that the pipeline that the transformation was accomplished satisfies the operation requirement, thereby realized the detection to the whole cycle of construction, avoided construction trouble and unqualified.

Description

Detection method and equipment for sewage pipeline

Technical Field

The application relates to the technical field of sewage pipeline transformation, in particular to a sewage pipeline detection method and equipment.

Background

The urban drainage pipe network is an indispensable important infrastructure of modern cities, is a basic industry with global and precedent influence on urban economic development, is a backbone of urban water pollution control and urban waterlogging drainage and flood control, and is an important mark for measuring the level of the modern cities.

When a municipal road is reformed, excavation construction often causes partial damage to a current sewage main pipeline; the main sewage pipeline needs to be repaired. The two ends of the repair section need to be cut off in the conventional excavation construction, and the main sewage pipeline is generally buried deeply, so that the excavation depth is usually deep; the method has certain influence on adjacent houses, underground facilities and the like, has long construction period and causes certain troubles to the lives of residents along the line.

Furthermore, with the progress of urbanization, the load of sewage systems is becoming more and more severe, and the urban underground sewage pipeline facilities may be over-corroded or broken and lose efficacy after many years of service. If the sewage piping system is damaged, the leakage of harmful substances inevitably damages public health.

However, the existing sewage pipeline has a long reconstruction period, each link is difficult to be ensured to be completely correct in the whole construction process, and the construction result is difficult to be ensured due to the fact that inevitable problems may exist in the construction process due to uncertainty of environmental factors.

Disclosure of Invention

The present application is proposed to solve the above-mentioned technical problems. The embodiment of the application provides a sewage pipeline detection method and equipment, and solves the problem that the construction result is difficult to guarantee.

According to an aspect of the present application, there is provided a method of inspecting a sewer line, including: trimming an inspection well of a sewage pipeline to be modified; carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified; when the internal condition of the sewage pipeline to be modified meets the construction condition, performing pipeline modification operation; detecting the construction state of the construction area of the sewage pipeline to be modified in the pipeline modification process; and when the construction state shows that the construction of the construction area is qualified, checking and detecting the transformed pipeline.

In one embodiment, the refurbishing the manhole of the sewer line to be refurbished comprises: performing a flushing operation on the inspection well; carrying out compaction and trowelling operation on the surface of a launder of the inspection well; and carrying out jointing and plastering operation on the wall of the inspection well.

In one embodiment, the refurbishing the manhole of the sewer line to be rehabilitated further comprises: and when the corrosion degree of the step of the inspection well is greater than a preset proportion, replacing the step of the inspection well.

In an embodiment, the initially detecting the interior of the sewer line to be modified to obtain the interior condition and the modification path of the sewer line to be modified includes: detecting the concentration of harmful gas in the sewage pipeline to be modified; detecting the water level height inside the sewage pipeline to be modified; and detecting the position of the branch pipe inside the sewage pipeline to be modified.

In an embodiment, the performing the pipeline renovation operation when the internal condition of the sewage pipeline to be renovated satisfies a construction condition includes: and when the concentration of the to-be-harmful gas is lower than the preset concentration and the water level is lower than the preset height, performing pipeline reconstruction operation.

In one embodiment, the detecting of the construction state of the construction area of the sewage pipeline to be modified includes: and detecting the top horizontal displacement of the sewage pipeline to be modified, the top vertical displacement of the sewage pipeline to be modified and the road surface condition of the construction area.

In an embodiment, when the construction state indicates that the construction of the construction area is qualified, the checking and checking the transformed pipeline includes: and when the top horizontal displacement of the sewage pipeline to be modified is smaller than a preset horizontal displacement, the top vertical displacement of the sewage pipeline to be modified is smaller than a preset vertical displacement, and the pavement condition of the construction area has no cracks or settlement, checking and detecting the modified pipeline.

In an embodiment, the acceptance check of the rebuilt pipeline comprises: adopting a closed-circuit television detection endoscopic system to shoot the inner wall image of the modified pipeline; and determining the acceptance result of the modified pipeline according to the inner wall image.

In an embodiment, the determining the acceptance result of the modified pipeline according to the inner wall image includes: and when the inner wall image shows that the joints of the modified pipeline are tightly embedded and firmly connected, and have no obvious protrusion, recess, staggered platform, longitudinal bulge, annular flat and joint separation, determining that the acceptance result of the modified pipeline is qualified.

According to another aspect of the present application, there is provided a sewage line inspection apparatus including: the trimming module is used for trimming the inspection well of the sewage pipeline to be modified; the initial detection module is used for carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified; the transformation module is used for executing pipeline transformation operation when the internal condition of the sewage pipeline to be transformed meets the construction condition; the state detection module is used for detecting the construction state of the construction area of the sewage pipeline to be modified in the pipeline modification process; and the acceptance detection module is used for carrying out acceptance detection on the transformed pipeline when the construction state shows that the construction of the construction area is qualified.

According to the detection method and the detection equipment for the sewage pipeline, the inspection well of the sewage pipeline to be modified is trimmed; carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified; when the internal condition of the sewage pipeline to be modified meets the construction conditions, performing pipeline modification operation; detecting the construction state of a construction area of a sewage pipeline to be modified in the process of executing pipeline modification; when the construction state indicates that the construction of the construction area is qualified, checking and detecting the transformed pipeline; through the initial detection before the construction in order to confirm to be under satisfying construction conditions and be under construction, improve construction operating personnel's security, the construction state in the construction engineering detects in order to guarantee the normal clear of construction, and accomplishes the back at the construction and checks the pipeline of accomplishing the transformation and accept and detect to confirm that the pipeline of accomplishing the transformation satisfies the operation requirement, thereby realized the detection to the whole cycle of construction, avoided construction trouble and unqualified.

Drawings

The above and other objects, features and advantages of the present application will become more apparent by describing in more detail embodiments of the present application with reference to the attached drawings. The accompanying drawings are included to provide a further understanding of the embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings, like reference numbers generally represent like parts or steps.

FIG. 1 is a schematic flow chart of a method of testing a sewer line according to an exemplary embodiment of the present application.

FIG. 2 is a schematic flow chart of a method for conditioning a manhole according to an exemplary embodiment of the present disclosure.

Fig. 3 is a flowchart illustrating an initial detection method according to an exemplary embodiment of the present application.

Fig. 4 is a schematic flow chart of a pipeline acceptance inspection method according to an exemplary embodiment of the present application.

FIG. 5 is a schematic block diagram of a sewer pipeline inspection device according to an exemplary embodiment of the present application.

Fig. 6 is a schematic structural view of a sewage line inspection apparatus according to another exemplary embodiment of the present application.

Fig. 7 is a block diagram of an electronic device provided in an exemplary embodiment of the present application.

Detailed Description

Hereinafter, example embodiments according to the present application will be described in detail with reference to the accompanying drawings. It should be understood that the described embodiments are only some embodiments of the present application and not all embodiments of the present application, and that the present application is not limited by the example embodiments described herein.

FIG. 1 is a schematic flow chart of a method of testing a sewer line according to an exemplary embodiment of the present application. As shown in fig. 1, the method of inspecting a sewer line includes:

step 110: and trimming the inspection well of the sewage pipeline to be modified.

The repairing part of the inspection well is a flow groove, a newly-built pipeline and the well wall of the inspection well, a well chamber of the inspection well, and the damaged and broken part of the step.

Step 120: and carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified.

Before the construction is started, necessary CCTV inspection is carried out on the interior of the sewage pipeline to be modified so as to obtain the interior condition and the modification path of the sewage pipeline to be modified and ensure the construction safety and the subsequent accurate construction.

Step 130: when the internal condition of the sewage pipeline to be modified satisfies the construction conditions, the pipeline modification operation is performed.

When the internal conditions of the sewage pipeline to be modified meet the construction conditions, for example, the internal air quality of the sewage pipeline is suitable for construction, the internal water level is not high, and the like, the pipeline modification operation can be executed at the moment, so that the safety of constructors and the smooth construction can be ensured.

The specific pipeline reconstruction process may be: conveying the prefabricated strip-shaped section bar into a sewage pipe to be modified; spirally winding the strip-shaped section bar to form a new pipe in the sewage pipe to be modified; synchronously pushing the new pipeline formed by winding along the extension direction of the sewage pipe to be reformed; and plugging a gap between the new pipeline and the sewage pipe to be modified.

Specifically, set up the coiler in waiting the sewage pipe of reforming transform, and set up the spool of winding banded section bar on ground, then open the coiler, drive banded section bar and rotate around the spool and get into in waiting the sewage pipe of reforming transform. Wherein, the coiler is the coiler that can disassemble, and includes hydraulic drive head and winding equipment, puts into the observation well respectively through each part with the coiler, then assembles in the observation well to avoid being difficult to get into because the coiler is too big. Meanwhile, a reel for winding the strip-shaped section and the steel strip is arranged on the ground, and the strip-shaped section and the steel strip are driven by a winding machine to enter a sewage pipe to be modified.

The strip-shaped section bar is continuously wound into the winding machine under the driving of the winding machine, and the strip-shaped section bar is spirally and rotatably wound to form a continuous seamless new pipeline which is smaller than the original pipeline (the sewage pipe to be reconstructed) in the sewage pipe to be reconstructed. When the new pipe reaches another manhole (receiving well), the winding stops. In the winding process, construction operators strictly monitor the working condition of the winding machine, need to stop immediately when deviation, fracture and the like occur, find reasons and continue construction after treatment. The spiral wound device should be fixed in the initial manhole and its axis should coincide with the pipeline axis.

The winding forming and advancing processes of the new pipeline are synchronously carried out until the new pipeline reaches the target inspection well, so that the forming and advancing of the new pipeline are simultaneously carried out, namely the laying of the new pipeline is realized.

The concrete implementation mode for plugging the gap between the new pipeline and the sewage pipe to be modified can be as follows: and injecting slurry between the new pipeline and the sewage pipe to be modified to fill a gap between the new pipeline and the sewage pipe to be modified. And after the new pipelines are completely installed, plugging between the new pipelines and the old pipelines, burying grouting pipes, and grouting by the grouting pipes to fill gaps between the new pipelines and the old pipelines. The grouting pressure is not required to be too high, the pressure is controlled to be 0.2-0.3 Mpa, and grouting can be stopped after grouting holes stop sucking the grout and continue grouting for 5min under the set grouting pressure. Grouting adopts 1:1 cement slurry (mass ratio), the grouting completion amount is calculated by taking the clearance space between the new pipeline and the sewage pipe to be reconstructed as a standard, and the specific calculation mode is calculated according to the diameter of the sewage pipe to be reconstructed and the diameter of the new pipeline. The annular gap between the new pipeline and the sewage pipe to be modified needs to be filled by grouting, and a grouting consolidation body needs to fill the gap and does not have the phenomena of looseness, cavities and the like.

The concrete implementation mode of conveying the prefabricated strip-shaped section bar into the sewage pipe to be modified can be as follows: spirally winding the strip-shaped profile to achieve interlocking of the primary and secondary catches of the strip-shaped profile to form a spiral-shaped sealed pipe; injecting sealant and adhesive between the primary lock catch and the secondary lock catch; and a drawing steel wire is arranged between the main lock catch and the secondary lock catch.

The interlocking of the primary lock catch and the secondary lock catch of the strip-shaped section is realized through spiral winding, so that the spiral forming of the strip-shaped section is realized, namely a new pipeline with a sealed tubular structure is formed. By injecting the sealant and the adhesive between the main lock catch and the secondary lock catch, the joint strength and the sealing degree between the main lock catch and the secondary lock catch are further enhanced, so that the impact bearing capacity and the sealing performance of a new pipeline are improved. And for the process of expanding and attaching the original pipeline, a drawing steel wire is arranged between the main lock catch and the secondary lock catch, the port of the new pipeline is fixed before expansion, and the drawing steel wire and the spiral winding operation of the expansion process are alternately carried out until the expansion of the new pipeline of the whole repair section is finished.

When the strip-shaped section bars on the reel are completely used up and the sewage pipe to be modified is not modified, the reel is replaced. When the strip-shaped section bar on one reel is completely used up and the sewage pipe to be reformed is not reformed, that is, the strip-shaped section bar needs to be further wound to manufacture a new pipeline, the reel needs to be replaced at the moment, that is, a new reel needs to be replaced on the ground to continuously provide the strip-shaped section bar to manufacture and lay the new pipeline. And welding the belt-shaped section on the replaced reel with the belt-shaped section in the sewage pipe to be modified. After the reel is replaced, the new and old profiles need to be welded to ensure the sealing connection of the new and old profiles, and after welding, winding forming can be continued. The welding adopts electric hot melting connection, and the welded strip-shaped section bars are smoothly and firmly connected.

Step 140: in the pipeline reconstruction process, the construction state of the construction area of the sewage pipeline to be reconstructed is detected.

In the process of executing pipeline transformation, the construction state of the construction area of the sewage pipeline to be transformed needs to be detected in real time so as to know the construction state of the construction area in real time, and the overlarge deviation of the final construction result caused by tiny and bad accumulation in the construction process is avoided.

In an embodiment, the specific implementation manner of step 140 may be: detecting the top horizontal displacement of the sewage pipeline to be modified, the top vertical displacement of the sewage pipeline to be modified and the road surface condition of a construction area. Specifically, two monitoring methods of inspection and instrument observation can be adopted: the maximum allowed amount of top horizontal displacement of the sewer line to be modified is 30mm and the maximum allowed top vertical displacement of the sewer line to be modified is 20 mm. Wherein, the content of tour detection still includes: the ground ring beam and the side wall have no cracks and deform in a large range; the steel pipe support has no large deformation; the soil body behind the wall has the phenomena of settlement, cracks and slippage; the bottom and the side wall of the working pit have the phenomena of soil gushing, sand flowing, piping, water inflow and the like; the exposed soil condition after excavation is different from a rock and soil investigation report; whether the length and the layered thickness of the excavation sections of the working pit are consistent with the design requirements or not, and whether ultralong and ultradeep excavation exists or not; whether the discharge conditions of surface water and underground water are normal or not; whether the working pit dewatering facility operates normally or not; the ground around the working pit is loaded, and the loading condition is that the loading condition is the loading condition; the peripheral roads and the ground have no cracks or subsidence.

Specifically, the horizontal displacement observation is observed by a theodolite, and the vertical displacement observation is observed by a level. During the construction period of the working pit, observation is carried out once a day; during the installation period of the equipment, the observation is carried out once a day; during the operation, the observation is carried out once a day; if the deformation value is close to the allowable value in construction, encryption observation is needed, and observation is carried out twice to four times per day according to the situation. When one of the following conditions occurs, the monitoring should be enhanced, the monitoring frequency should be increased, and the monitoring result should be reported to the entrusting party and the related units in time: 1. monitoring data reaching an alarm value; 2. the monitoring data has larger variation or higher speed; 3. the existence of unfavorable geological conditions not found in the survey; 4. ultra-deep and ultra-long excavation or untimely support adding and the like are not constructed according to the design; 5. a large amount of accumulated water around the foundation pit and the foundation pit, long-time continuous rainfall and municipal pipeline leakage occur; 6. the ground load near the foundation pit suddenly increases or exceeds the design limit value; 7. cracking of the supporting structure; 8. sudden large settlement or severe cracking of the surrounding ground; 9. sudden large settlement, uneven settlement or severe cracking of adjacent building structures; 10. the bottom of the foundation pit, a slope body or a supporting structure has the phenomena of piping, leakage or sand flowing and the like; 11. and reorganizing construction after the accident occurs in the foundation pit engineering.

Step 150: and when the construction state indicates that the construction of the construction area is qualified, checking and detecting the transformed pipeline.

When the construction state of the construction area is qualified in the whole transformation process, after the transformation is completed, the transformed pipeline is required to be checked and detected so as to determine whether the final pipeline reaches the standard.

Specifically, when the top horizontal displacement of the sewage pipeline to be modified is smaller than the preset horizontal displacement, the top vertical displacement of the sewage pipeline to be modified is smaller than the preset vertical displacement, and the pavement condition of the construction area has no cracks or settlement, the pipeline which is modified is checked and accepted for detection.

According to the detection method of the sewage pipeline, the inspection well of the sewage pipeline to be modified is trimmed; carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified; when the internal condition of the sewage pipeline to be modified meets the construction conditions, performing pipeline modification operation; detecting the construction state of a construction area of a sewage pipeline to be modified in the process of executing pipeline modification; when the construction state indicates that the construction of the construction area is qualified, checking and detecting the transformed pipeline; through the initial detection before the construction in order to confirm to be under satisfying construction conditions and be under construction, improve construction operating personnel's security, the construction state in the construction engineering detects in order to guarantee the normal clear of construction, and accomplishes the back at the construction and checks the pipeline of accomplishing the transformation and accept and detect to confirm that the pipeline of accomplishing the transformation satisfies the operation requirement, thereby realized the detection to the whole cycle of construction, avoided construction trouble and unqualified.

FIG. 2 is a schematic flow chart of a method for conditioning a manhole according to an exemplary embodiment of the present disclosure. As shown in fig. 2, step 110 may include:

step 111: and carrying out flushing operation on the inspection well.

The inspection well is maintained and needs to be washed the inspection well by using the high-pressure jet vehicle, the well to be inspected can be maintained after being washed clean, the maintenance is convenient, and the maintenance accuracy is improved.

Step 112: and carrying out compaction and trowelling operation on the surface of the launder of the inspection well.

The launder surface was 20mm thick l: 2.5 plastering cement mortar, compacting and finishing, and smoothly conforming to the upstream and downstream pipelines to reduce friction resistance.

Step 113: and carrying out jointing and plastering operation on the wall of the inspection well.

The wall of a well should be subjected to pointing, and pointing and well chamber plastering adopt 1: 2 (waterproof) cement mortar. Residual mortar adhered to the surface of the masonry body is cleaned; removing the pointing mortar from the pointing masonry; sprinkling water on the brick wall surface for moistening; the strength grade of the plastering cement mortar is in accordance with the design specification, the consistency meets the construction requirement, the consistency of the bottom layer mortar is preferably 12cm, and the other consistency is preferably 7-8 cm; the thickness of the plastering is not less than 2 cm; plastering cement mortar is formed in two ways, after the first way of mortar is formed, lines are scribed on the surface, and after finishing, the second way of plastering is carried out at an interval of 48 hours; the second mortar is compacted and finished in two times; stepped stubbles are reserved on construction stubbles for plastering, the stubbles on the upper layer and the lower layer are staggered, and the positions of the reserved stubbles are separated from the corners by more than 150 mm. When the stubble is jointed, the stubble is uniformly coated with cement paste for one time, and then the cement paste is overlapped layer by layer according to the hierarchical operation sequence, and the stubble is tight.

In an embodiment, as shown in fig. 2, the step 110 may further include:

step 114: and when the corrosion degree of the step of the inspection well is greater than the preset proportion, the step of the inspection well is replaced.

Specifically, when the corrosion degree of the steps exceeds 50%, the new steps need to be replaced, the replaced steps are cast iron steps, the original old steps need to be manually dismantled before replacement, high-strength cement mortar and quick-drying cement are used for filling, and when the corrosion degree of the steps is lower than 50%, the old steps are subjected to anticorrosion treatment (both the new steps and the original steps need to be subjected to anticorrosion treatment).

Fig. 3 is a flowchart illustrating an initial detection method according to an exemplary embodiment of the present application. As shown in fig. 3, the step 120 may include:

step 121: and detecting the concentration of harmful gas in the sewage pipeline to be modified.

Because toxic and harmful gas exists in the well and the pipe, in order to ensure the safety of construction and personnel, construction personnel need to carry out forced ventilation (at least 30 minutes) on the construction well and the pipeline before going into the well. Erecting an air feeder at the wellhead of the construction well, and respectively erecting suction fans at the wellheads of the upstream well and the downstream well of the construction well to keep smooth air supply in a pipeline; the purpose of replacing poisonous and harmful gas in the well and the pipe is achieved by continuous air supply. And assigning a special gas detector (a four-in-one gas detector) to continuously detect the harmful gas until the concentration of the harmful gas in the construction well and the pipeline reaches a specified safety value, and then performing underground operation.

Under the condition that poisonous and harmful gas in the well exceeds the standard, personnel forbid the operation of going into the well. The detection indexes comprise an oxygen concentration value, a concentration value of inflammable and explosive substances (combustible gas and explosive dust), a concentration value of toxic gas and the like. The following three items should be detected at a minimum: oxygen concentration (should be in the range of 19.5-23.5%), flammable/combustible gas concentration (should be below minimum explosive)10% of the limit), carbon monoxide concentration (should be below 25 ppm). Specifically, the concentration of oxygen is not less than 19.5%, and the concentration of hydrogen sulfide is less than 10mg/m³The concentration of carbon monoxide is lower than 20mg/m³The concentration of the combustible gas is less than 5% LEL.

Step 122: and detecting the water level height inside the sewage pipeline to be modified.

The water level height inside the sewage pipeline to be modified is detected, and when the water level height is too high, the operation of going into the well is strictly forbidden to ensure the safety of constructors.

Step 123: the position of the branch pipe inside the sewage pipeline to be modified is detected.

By inspection, special conditions in the pipeline (such as cracks, hardened cement blocks, breaks, etc.) can be recorded and located in detail, and if the pipeline also has branches, the position of the branch must be accurately measured and recorded for subsequent cutting and sealing operations. When the concentration of the harmful gas is lower than the preset concentration and the water level is lower than the preset height, the pipeline reconstruction operation can be executed.

Fig. 4 is a schematic flow chart of a pipeline acceptance inspection method according to an exemplary embodiment of the present application. As shown in fig. 4, the step 150 may include:

step 151: and (3) shooting the inner wall image of the modified pipeline by adopting a pipeline closed-circuit television detection endoscopic system.

After the transformation is completed, a Closed Circuit Television (CCTV) endoscopic system is adopted to detect the interior of the new pipeline, and image data of the inner wall of the lining pipe is shot to be used as the basis for completion acceptance.

Step 152: and determining the acceptance result of the modified pipeline according to the inner wall image.

And after the reconstructed pipeline inner wall image is obtained, determining an acceptance result of the reconstructed pipeline according to the image, namely determining whether the reconstruction is qualified according to the shot inner wall image.

Specifically, when the inner wall image shows that the joint of the modified pipeline is tightly embedded and firmly connected, and no obvious protrusion, recess, staggered platform, longitudinal bulge, annular flat and joint separation exist, the acceptance result of the modified pipeline is determined to be qualified. The standard of acceptance and detection qualification is as follows: the joints should be tightly embedded and firmly connected, and the phenomena of obvious protrusion, depression, dislocation and the like should not occur, the phenomena of longitudinal bulge, annular flatness, joint separation and the like cannot occur, the pipeline line shape should be smooth, the joints should be smooth, the transition of the old pipeline and the new pipeline should be smooth, and the new pipeline should not have obvious wet stains.

And after the acceptance of the pipeline inner wall image is qualified, carrying out a water closing test on the new pipeline, and finishing the construction of the current construction section after the result of the water closing test is qualified. Before water injection, whether pipe plugs of all reserved branch pipes are tight or not is checked, whether the intensity of the plastering meets the requirement or not is checked, and after the pipe plugs are qualified, water can be injected. And (4) in the water injection process, the water closing test is carried out when no water leakage exists at the positions of pipe blockage, pipelines, well bodies and the like. The water level of the test is 2m above the top of the upstream pipe of the test section.

The appearance inspection of the interface and the pipe body in the water closing test is qualified as no water leakage, the measuring time of the water leakage amount is not less than 24h, and the water leakage amount is not more than the allowable water leakage amount. The water cut-off test allows the amount of water to be calculated as follows:

Q_e＝0.0046D_L

wherein: q_eAn allowable water seepage amount (m3) of 24h per 1km of pipe length; d_LIs the inner diameter (mm) of the pipeline.

And (3) performing a water closing test on the new pipeline under the conditions that the appearance quality and measurement inspection of the inspection well and the pipeline of the sewage pipeline are qualified, all reserved holes are blocked without water leakage, a water source meeting the water closing requirement is in the site, and the water discharge of the nearby environment is not influenced. When the result of the water closing test is qualified, the construction of the current construction section is finished, and the construction of the current construction section can be finished at the moment so as to carry out the construction of other construction sections. This application also can be after all construction sections are accomplished, the test of closing water is carried out to whole sewage line again.

Before winding to make a new pipe, the method can further comprise: digging a vertical shaft at the sewage pipeline to be modified; plugging a connecting channel between the current construction section and the adjacent construction section of the sewage pipe to be reconstructed, and conducting water guiding on the current construction section; and carrying out dredging operation on the sewage pipe in the current construction section.

The shaft excavation mode in this application adopts steel grating to hang reinforcing bar net piece and hangs reverse construction method plus corner brace, and the layering excavation, the layering anchor shotcrete concrete is strutted. The vertical shaft is square, the structure thickness is 300mm, in order to ensure the stable structure of the vertical shaft, a cast-in-place concrete locking collar beam is arranged at the well mouth, and the section size is 1000mm multiplied by 800 mm.

Wherein, the sewage pipe that waits to reform transform is divided into a plurality of construction sections along the sewage pipe extending direction that waits to reform transform. Specifically, the upstream and the downstream of the current construction section can be plugged, and a sewage pump and a temporary pipe are adopted to conduct water guiding on the current construction section.

The principle of sectional construction and sectional water guide is adopted in the application. The sewage pipeline has larger water flow and higher water level, and in order to ensure safety, workers can not directly enter the inspection well for plugging. The water level in the pipe is required to be lowered first. After the water level is lowered, manually entering the inspection well for plugging. The upstream and downstream of each construction section pipeline are blocked by bricks, a sewage pump and a DN600 temporary pipe are adopted for water guiding, the water guiding pipe is paved in a downward returning mode when the paved pipeline passes through an intersection and a community opening, and a steel plate is paved on the road for protection. Wherein, plugging material is M10 cement mortar and builds MU10 sand lime brick, and the shutoff is built by laying bricks or stones thickness 500mm, and outer smear thickness 2cm and 1: 2.5 cement waterproof mortar.

Optionally, a winch and a closed transport vehicle are used for dredging the sewage pipe in the current construction section, and a high-pressure jet vehicle is used for flushing the sewage pipe in the current construction section. As the pipeline is transformed into the existing operating sewage pipeline, the sludge and sundries deposited in the pipeline reach 20 percent, the poor construction effect of the winding pipe is easily caused, namely, the track and elevation displacement is caused because too many attachments are adhered in the wall of the old pipe; the thrust is increased, and the outer wall of the new pipe is easy to scratch, so that the sewage pipe and the inspection well in the prior art need to be thoroughly desilted before installing the new pipeline. The pipeline dredging operation adopts the jet flow vehicle and the winch to cooperate for dredging, the silt is abandoned by the closed type transport vehicle, and the high-pressure jet flow vehicle is used for washing after dredging. When the pipeline is collapsed or seriously blocked, a lengthened shovel is needed to be used for dredging.

Firstly, a high-pressure jet vehicle is adopted to carry out primary washing on a pipeline, and a blocking grate is arranged at a downstream pipe orifice of an inspection well before washing. The jet flow vehicle is washed by a professional, the jet flow vehicle is washed from downstream to upstream, and the flushed sundries can be cleaned just when the jet flow vehicle stops washing. After the pipeline is firstly flushed by the high-pressure dredging vehicle, the two wells are communicated by the threading device, then the steel strand is tied at one end of the threading device, the steel strand is taken over, the steel strand (larger than the distance between the two inspection wells) is tied at the two sides of the mud supporting plate respectively, and the mud supporting plate is selected and used to be gradually increased from small to large until the size of the mud supporting plate is consistent with the size of the dredging pipeline. And after all the pipelines are desilted, the pipelines are flushed by the jet flow vehicle.

Optionally, the specific manner of digging the shaft may include: the method comprises the steps of digging a vertical shaft in layers at a sewage pipeline to be modified, arranging a locking collar beam at a well mouth of the vertical shaft, erecting a steel grating below the locking collar beam, drilling a steel bar anchor rod on the side wall of the vertical shaft, welding a connecting rib and a steel bar mesh piece on the steel bar anchor rod, spraying concrete on the connecting rib and the steel bar mesh piece, and sealing the bottom of the vertical shaft.

The vertical shaft is dug in layers at the position of the sewage pipeline to be modified, and the structure of the vertical shaft is reinforced after the digging operation of each layer is completed, so that the stability of the vertical shaft is ensured. The width of the locking collar beam of the vertical shaft is 1000mm, the depth is 800mm, the locking collar beam is of a reinforced concrete structure, and the concrete is C30. And excavating foundation pit earthwork after the strength of the concrete of the locking collar beam reaches 80%. The upper part adopts machinery and manual work to cooperate and excavate soil, the lower part excavates soil manually while the anchor spraying is carried out, and a crane and a soil hopper are used for vertical transportation and mining. The excavation is carried out by adopting a mode of excavating from top to bottom, diagonally excavating and reserving core soil in the middle, and the same layer is strictly prohibited to run through the excavation in order to ensure safety. The excavation step sequence is matched with the grid installation step sequence, the excavation depth of each cycle is equal to the distance between the steel grids, excavation earthwork needs to be accumulated outside 10m of the periphery of the foundation pit, and the accumulation height is not more than 2 m. The spoil needs to be transported out of the site in time and cannot be accumulated on the side of the foundation pit in a large quantity, so that the risk of collapse caused by overlarge stress of the foundation pit supporting structure is avoided. The thickness of a reserved soil layer at the bottom of the natural foundation part is 20cm, when the mechanical excavation is carried out above the designed bottom of the foundation, measurement personnel cooperate to carry out the excavation together, the elevation is controlled by leveling measurement, and the excavation is not required to be carried out excessively so as to avoid disturbing the lower holding ground layer.

Optionally, steel gratings are erected below the locking collar beam in a layered mode; the steel gratings on the same layer are connected by angle steel, and the connecting plates of the upper layer steel grating and the lower layer steel grating are arranged in a staggered mode. The part below the locking collar beam of the vertical shaft adopts a structure of sprayed concrete, steel grating and reinforcing mesh. The vertical spacing of horizontal steel grating is 500 mm. The vertical direction is connected by a phi 25 steel bar, the inner layer and the outer layer are arranged at an interval of 1m, and the vertical direction is integrated with a vertical shaft locking collar beam steel bar. The phi 8@150 x 150 steel bar mesh sheets are fully paved along the outer edges of the inner and outer main bars of the steel grating and are welded with the main bars into a whole, and the welding mode adopts lap welding and meets the standard requirement. In the construction of the vertical shaft, phi 25 embedded hollow grouting anchor rods with the length of 2.5m are arranged along the wall of the vertical shaft at the interval of 1.2 multiplied by 1.2 m. A closed ring beam is arranged at a ingate of a shaft wall of the vertical shaft, the ingate is constructed after the shaft is supported and a bottom plate is completed, a steel grating is broken at the ingate, steel bars are anchored into the ingate boundary beam, and the anchoring length is met.

The steel grating is assembled on site by sections, the steel gratings on the same layer are connected by adopting angle steel, the bolts are M22, the angle steel is 125 multiplied by 80 multiplied by 10, double-sided welding is adopted between the main ribs and the angle steel, the effective weld length is not less than 50mm, peripheral welding is adopted between the end parts of the main ribs and the steel plate, the height of the weld is not less than 8mm, and the positions of the upper layer steel grating connecting plates and the lower layer steel grating connecting plates are arranged in a staggered mode.

Connecting ribs are needed to be used between every two adjacent steel gratings, the connecting ribs are made of phi 25 deformed steel bars, the connecting ribs are used on the inner side and the outer side of each steel grating simultaneously, and the inner side and the outer side of each steel grating are arranged in a staggered mode. The distance between the connecting ribs on the same side is 1m, and the connecting ribs are firmly welded with the steel grating. When the connecting ribs are lapped, the requirements of five times of the diameter of the steel bar for double-sided welding and ten times of the diameter of the steel bar for single-sided welding are met, and E50 is adopted for welding all the welding.

The design strength rating for shotcrete in this application is C25. And the concrete mixing ratio signboard and the metering equipment are arranged on site, so that the accuracy of various materials is ensured. The cement, the sand and the broken stones are stirred by a stirrer, the accelerator is added into the mixture near the sprayer, the mixture is used along with stirring, and the storage time of the dry material without the accelerator is not more than 45 minutes. In one embodiment, the concrete is sprayed on the connecting bars and the reinforcing mesh sheets in a layered, slicing and segmented mode in sequence, and the spraying direction is from bottom to top and spirally moves along the horizontal direction. The spraying operation should be carried out in layers, in pieces and in sections, the spraying sequence should spirally move along the horizontal direction from bottom to top, the convolution diameter should be about 300mm, half a circle is pressed for one circle, the once spraying thickness should not be larger than 100mm, and the spraying operation should be fully carried out in three layers and cannot be accumulated in one position.

The spraying hand must wear the raincoat, takes the rubber gloves, wears safety glasses and dust mask, must inspect whether instrument, equipment, material are complete intact before spraying, and the pipeline must not have the dead bend during the spraying, and non-operating personnel must not stop near, and the spray gun is forbidden the people under any circumstance strictly. The jetting machine must start with air supply, start and feed again, and close after the material is jetted. The material supply to the spraying machine should be continuous and uniform, and the hopper can keep enough material storage when the machine is in normal operation. The working wind pressure of the injection machine meets the requirement that the pressure at the nozzle is about 0.1MPa, and accumulated materials in the injection machine and the material conveying pipe must be cleaned completely when the injection operation is finished or the injection is interrupted due to reasons. The spray construction operation should comply with the following regulations: the good working performance of the spray head is always kept; the spray head and the sprayed surface should be kept vertical, the distance of 0.6-1.0 m should be kept, the water-cement ratio is controlled when the concrete is sprayed, and the surface of the concrete is kept flat. Before the concrete is sprayed in each excavation, the connecting position of the concrete sprayed in the previous time is roughened, and soil adhered to the surface is removed, so that the compactness of the concrete at the connecting position is guaranteed.

Optionally, the bottom of the vertical shaft is sealed by reinforced concrete, and the bottom of the vertical shaft is connected with the lowest steel grating. And after the excavation depth reaches the bottom elevation of the working pit, the construction is carried out, the construction is connected with the last grid of the bottom of the vertical shaft, a phi 20@200 x 200 double-layer reinforcing mesh is arranged at the bottom sealing layer, and a C30 concrete bottom sealing with the thickness of 300mm is arranged.

This application can also set up the guardrail that highly is not less than 1.2m around the working shaft to adopt close mesh safety net to seal, and establish the baseboard that is not less than 20cm, the guardrail material is 32 steel frame subducts. The working well is provided with a safety ladder and all necessary safety equipment, each ladder section is 800mm wide, the horizontal projection length is 7000mm, and the elevation angle of the ladder section is about 30-40 degrees. The outer side of each ladder section of the ladder stand is provided with a protective railing with the height not less than 1.2m, the guardrail upright posts and the handrails are made of 32 multiplied by 3.25 steel pipes, and the distance between the steel pipe upright posts is 0.5 m; and isolation measures are taken between the pedestrian area and the vertical transportation area. Two I-shaped steel beams are additionally arranged at a wellhead of the pedestrian steel ladder, and the support cross arm is arranged on a wellhead frame beam and mainly bears the loads of the steel ladder, personnel, materials and the like. The steel ladder is installed in a downward extending mode along with shaft excavation supporting construction, and the platform beam I-shaped steel is anchored in sprayed concrete of a shaft wall of the shaft and bears vertical or horizontal acting force transmitted by the steel ladder.

Optionally, the arrangement mode of the collar beam may include: installing a locking collar beam steel bar at the wellhead of the shaft, inserting a longitudinal connecting steel bar in the locking collar beam steel bar, installing a derrick and a ladder way embedded iron on the longitudinal connecting steel bar, pouring concrete on the locking collar beam steel bar, building a water retaining wall on the derrick and the ladder way embedded iron, and installing a handrail on the water retaining wall.

The erection of the main structure of the fore shaft ring beam is realized by installing the fore shaft ring beam steel bars (main bars) at the well mouth of the vertical shaft, wherein the fore shaft ring beam steel bars use 22 pieces of phi 20 deformed steel bars.

Through inserting the longitudinal connection reinforcing bar in the fore shaft collar tie beam reinforcing bar to realize the mutual support of fore shaft collar tie beam reinforcing bar and fix, thereby improved the bulk strength of fore shaft collar tie beam. Wherein, the reinforcing bar of phi 10 is used to the vertical connecting reinforcing bar, and the interval between adjacent vertical connecting reinforcing bars is 200 mm.

Through installing derrick and ladder way embedded iron on longitudinal connection reinforcing bar to realize that operating personnel conveniently gets into in the construction area, and guaranteed operating personnel's safety.

The strength of the locking collar beam is further improved by pouring concrete on the locking collar beam reinforcing steel bars. Wherein the thickness of the concrete layer is 40 mm.

The water retaining wall is built on the derrick and the ladder way embedded iron, so that sewage is blocked, the sewage is prevented from entering the embedded iron to influence construction, and the construction environment of operators is improved.

The guardrail is arranged on the water retaining wall, so that the construction safety of operators is further improved.

FIG. 5 is a schematic block diagram of a sewer pipeline inspection device according to an exemplary embodiment of the present application. As shown in fig. 5, the sewage line inspection apparatus 50 includes: a trimming module 51 for trimming the manhole of the sewage pipeline to be modified; the initial detection module 52 is configured to perform initial detection on the interior of the sewage pipeline to be modified, so as to obtain an internal condition and a modification path of the sewage pipeline to be modified; a modification module 53 for performing a pipeline modification operation when an internal condition of the sewage pipeline to be modified satisfies a construction condition; a state detection module 54, configured to detect a construction state of a construction area of the sewage pipeline to be modified in a pipeline modification process; and an acceptance detection module 55, configured to, when the construction state indicates that the construction of the construction area is qualified, perform acceptance detection on the pipeline that has been modified.

According to the detection equipment for the sewage pipeline, the inspection well of the sewage pipeline to be modified is modified through the modification module 51; the initial detection module 52 performs initial detection on the interior of the sewage pipeline to be modified to obtain the internal condition and the modification path of the sewage pipeline to be modified; the modification module 53 performs a pipeline modification operation when the internal condition of the sewage pipeline to be modified satisfies a construction condition; the state detection module 54 detects the construction state of the construction area of the sewage pipeline to be modified in the pipeline modification process; and the acceptance detection module 55 performs acceptance detection on the transformed pipeline when the construction state indicates that the construction of the construction area is qualified; through the initial detection before the construction in order to confirm to be under satisfying construction conditions and be under construction, improve construction operating personnel's security, the construction state in the construction engineering detects in order to guarantee the normal clear of construction, and accomplishes the back at the construction and checks the pipeline of accomplishing the transformation and accept and detect to confirm that the pipeline of accomplishing the transformation satisfies the operation requirement, thereby realized the detection to the whole cycle of construction, avoided construction trouble and unqualified.

In an embodiment, the status detection module 54 may be further configured to: detecting the top horizontal displacement of the sewage pipeline to be modified, the top vertical displacement of the sewage pipeline to be modified and the road surface condition of a construction area.

Fig. 6 is a schematic structural view of a sewage line inspection apparatus according to another exemplary embodiment of the present application. As shown in fig. 6, the trimming module 51 may include: a flushing unit 511 for performing a flushing operation on the inspection well; a compacting and polishing unit 512 for performing compacting and polishing operation on the surface of the launder of the inspection well; a plastering unit 513, configured to perform pointing and plastering operations on a well wall of the inspection well; and a step replacing unit 514 for replacing the steps of the inspection well when the corrosion degree of the steps of the inspection well is greater than a preset ratio.

In one embodiment, as shown in fig. 6, the initial detection module 52 may include: a gas detection unit 521 for detecting the concentration of harmful gas inside the sewage pipeline to be modified; a water level detection unit 522 for detecting the height of the water level inside the sewage pipeline to be modified; a branch pipe detecting unit 523 for detecting the position of the branch pipe inside the sewage pipeline to be modified.

In one embodiment, as shown in fig. 6, the acceptance detection module 55 may include: the influence acquisition unit 551 is used for shooting the inner wall image of the modified pipeline by adopting a pipeline closed-circuit television detection endoscopic system; the result determining unit 552 is configured to determine an acceptance result of the modified pipeline according to the inner wall image.

Next, an electronic apparatus according to an embodiment of the present application is described with reference to fig. 7. The electronic device can be applied to the intelligent shallow-buried and underground excavated working equipment, and the electronic device can be one or both of the first device and the second device or a stand-alone device independent of the first device and the second device, and the stand-alone device can be communicated with the first device and the second device to receive the collected input signals from the first device and the second device.

FIG. 7 illustrates a block diagram of an electronic device in accordance with an embodiment of the present application.

As shown in fig. 7, the electronic device 10 includes one or more processors 11 and memory 12.

The processor 11 may be a Central Processing Unit (CPU) or other form of processing unit having data processing capabilities and/or instruction execution capabilities, and may control other components in the electronic device 10 to perform desired functions.

Memory 12 may include one or more computer program products that may include various forms of computer-readable storage media, such as volatile memory and/or non-volatile memory. The volatile memory may include, for example, Random Access Memory (RAM), cache memory (cache), and/or the like. The non-volatile memory may include, for example, Read Only Memory (ROM), hard disk, flash memory, etc. On which one or more computer program instructions may be stored that may be executed by the processor 11 to implement the sewer line detection methods of the various embodiments of the present application described above and/or other desired functions. Various contents such as an input signal, a signal component, a noise component, etc. may also be stored in the computer-readable storage medium.

In one example, the electronic device 10 may further include: an input device 13 and an output device 14, which are interconnected by a bus system and/or other form of connection mechanism (not shown).

For example, when the electronic device is a first device or a second device, the input device 13 may be an instrument such as a sensor for inputting a signal. When the electronic device is a stand-alone device, the input means 13 may be a communication network connector for receiving the acquired input signals from the first device and the second device.

The input device 13 may also include, for example, a keyboard, a mouse, and the like.

The output device 14 may output various information including the determined distance information, direction information, and the like to the outside. The output devices 14 may include, for example, a display, speakers, a printer, and a communication network and its connected remote output devices, among others.

Of course, for simplicity, only some of the components of the electronic device 10 relevant to the present application are shown in fig. 7, and components such as buses, input/output interfaces, and the like are omitted. In addition, the electronic device 10 may include any other suitable components depending on the particular application.

In addition to the above-described methods and apparatus, embodiments of the present application may also be a computer program product comprising computer program instructions which, when executed by a processor, cause the processor to perform the steps of the method of detection of a sewer line according to various embodiments of the present application described in the "exemplary methods" section of this specification, above.

The computer program product may be written with program code for performing the operations of embodiments of the present application in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server.

Furthermore, embodiments of the present application may also be a computer readable storage medium having stored thereon computer program instructions which, when executed by a processor, cause the processor to perform the steps in the method of detection of a sewer line according to various embodiments of the present application described in the "exemplary methods" section above in this description.

The computer-readable storage medium may take any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. A readable storage medium may include, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or a combination of any of the foregoing. More specific examples (a non-exhaustive list) of the readable storage medium include: an electrical connection having one or more wires, a portable disk, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disc read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

The foregoing describes the general principles of the present application in conjunction with specific embodiments, however, it is noted that the advantages, effects, etc. mentioned in the present application are merely examples and are not limiting, and they should not be considered essential to the various embodiments of the present application. Furthermore, the foregoing disclosure of specific details is for the purpose of illustration and description and is not intended to be limiting, since the foregoing disclosure is not intended to be exhaustive or to limit the disclosure to the precise details disclosed.

The block diagrams of devices, apparatuses, systems referred to in this application are only given as illustrative examples and are not intended to require or imply that the connections, arrangements, configurations, etc. must be made in the manner shown in the block diagrams. These devices, apparatuses, devices, systems may be connected, arranged, configured in any manner, as will be appreciated by those skilled in the art. Words such as "including," "comprising," "having," and the like are open-ended words that mean "including, but not limited to," and are used interchangeably therewith. The words "or" and "as used herein mean, and are used interchangeably with, the word" and/or, "unless the context clearly dictates otherwise. The word "such as" is used herein to mean, and is used interchangeably with, the phrase "such as but not limited to".

It should also be noted that in the devices, apparatuses, and methods of the present application, the components or steps may be decomposed and/or recombined. These decompositions and/or recombinations are to be considered as equivalents of the present application.

The previous description of the disclosed aspects is provided to enable any person skilled in the art to make or use the present application. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects without departing from the scope of the application. Thus, the present application is not intended to be limited to the aspects shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

The foregoing description has been presented for purposes of illustration and description. Furthermore, the description is not intended to limit embodiments of the application to the form disclosed herein. While a number of example aspects and embodiments have been discussed above, those of skill in the art will recognize certain variations, modifications, alterations, additions and sub-combinations thereof.

Claims

1. A method of inspecting a sewer line, comprising:

trimming an inspection well of a sewage pipeline to be modified;

carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified;

when the internal condition of the sewage pipeline to be modified meets the construction condition, performing pipeline modification operation;

detecting the construction state of the construction area of the sewage pipeline to be modified in the pipeline modification process; and

and when the construction state shows that the construction of the construction area is qualified, checking and detecting the transformed pipeline.

2. The method of claim 1, wherein modifying the manhole of the sewer line to be modified comprises:

performing a flushing operation on the inspection well;

carrying out compaction and trowelling operation on the surface of a launder of the inspection well; and

and carrying out jointing and plastering operation on the wall of the inspection well.

3. The method of inspecting a sewer line of claim 2, wherein the modifying the manhole of the sewer line to be modified further comprises:

and when the corrosion degree of the step of the inspection well is greater than a preset proportion, replacing the step of the inspection well.

4. The method of claim 1, wherein the initially inspecting the interior of the sewer line to be modified to obtain the interior condition and the modification path of the sewer line to be modified comprises:

detecting the concentration of harmful gas in the sewage pipeline to be modified;

detecting the water level height inside the sewage pipeline to be modified; and

and detecting the position of the branch pipe in the sewage pipeline to be modified.

5. The sewer line inspection method of claim 4, wherein performing the pipeline rehabilitation operation when the internal condition of the sewer line to be rehabilitated satisfies construction conditions comprises:

and when the concentration of the to-be-harmful gas is lower than the preset concentration and the water level is lower than the preset height, performing pipeline reconstruction operation.

6. The method of claim 1, wherein the detecting the construction state of the construction area of the sewer line to be modified comprises:

and detecting the top horizontal displacement of the sewage pipeline to be modified, the top vertical displacement of the sewage pipeline to be modified and the road surface condition of the construction area.

7. The method of claim 6, wherein the inspecting the modified pipeline when the construction status indicates that the construction of the construction area is acceptable comprises:

and when the top horizontal displacement of the sewage pipeline to be modified is smaller than a preset horizontal displacement, the top vertical displacement of the sewage pipeline to be modified is smaller than a preset vertical displacement, and the pavement condition of the construction area has no cracks or settlement, checking and detecting the modified pipeline.

8. The method of claim 1, wherein the acceptance testing of the retrofitted pipeline comprises:

adopting a closed-circuit television detection endoscopic system to shoot the inner wall image of the modified pipeline; and

and determining the acceptance result of the modified pipeline according to the inner wall image.

9. The method of claim 8, wherein the determining the acceptance of the modified pipeline based on the image of the inner wall comprises:

and when the inner wall image shows that the joints of the modified pipeline are tightly embedded and firmly connected, and have no obvious protrusion, recess, staggered platform, longitudinal bulge, annular flat and joint separation, determining that the acceptance result of the modified pipeline is qualified.

10. A sewer line inspection apparatus, comprising:

the trimming module is used for trimming the inspection well of the sewage pipeline to be modified;

the initial detection module is used for carrying out initial detection on the interior of the sewage pipeline to be modified to obtain the interior condition and the modification path of the sewage pipeline to be modified;

the transformation module is used for executing pipeline transformation operation when the internal condition of the sewage pipeline to be transformed meets the construction condition;

the state detection module is used for detecting the construction state of the construction area of the sewage pipeline to be modified in the pipeline modification process; and

and the acceptance detection module is used for carrying out acceptance detection on the transformed pipeline when the construction state shows that the construction of the construction area is qualified.