CN112505033B - Efficient super-digging exploratory pit detection method for construction process - Google Patents
Efficient super-digging exploratory pit detection method for construction process Download PDFInfo
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- 238000010276 construction Methods 0.000 title claims abstract description 55
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Abstract
The invention discloses a high-efficiency super-digging probe pit detection method for a construction process, which comprises the following four steps: judging the state of the foundation pit; detecting a normal foundation pit; detecting an abnormal foundation pit; and checking and accepting the foundation pit. By means of the mode, the efficient super-digging detection method for the construction process can quickly determine the pollution range of the foundation pit, so that the detailed super-digging range is clear, the extra consumption of a man-machine is reduced, the detection period is shortened, and the inspection and acceptance efficiency of the foundation pit is greatly improved.
Description
Technical Field
The invention relates to the field of soil remediation, in particular to a high-efficiency super-excavation probe detection method for a construction process.
Background
Under the condition that soil pollution is increasingly aggravated, the national environmental protection department successively goes out a series of policies to highlight importance of the soil restoration industry, at present, the number of pollution sites to be restored in China is very large, restoration modes adopted by different pollution plots are different, wherein the restoration modes are generally divided into in-situ restoration and ex-situ restoration, and the application of the latter is wider.
Ectopic repair refers to excavation or extraction treatment of contaminated soil from an original place where land mass is contaminated, and treatment and repair are carried or transferred to other places or places. By adopting the restoration mode, whether the original polluted area after excavation or extraction treatment still has pollution cannot be clearly determined, and under the condition, soil sample detection is still needed to be carried out on the area so as to judge the pollution and the overbreak condition. Therefore, in the detection process, if the foundation pit is overdrawed for a plurality of times and still is unqualified, the overdrawing operation of the area still needs to be continued until the detection is qualified. In the process, a large amount of manpower and material resources are consumed, the construction period of the repair engineering is influenced, and the repair cost is additionally increased.
Disclosure of Invention
The method aims to solve two problems existing in the process of soil ectopic repair and aiming at foundation pit detection after original polluted soil excavation or extraction, and firstly, the over excavation range of the foundation pit cannot be rapidly determined. Secondly, the foundation pit detection period is longer.
In order to solve the technical problems, the invention adopts a technical scheme that:
The method for detecting the high-efficiency super-excavation probe pit in the construction process comprises the following steps:
(1) Judging the state of the foundation pit according to the color and the smell of the foundation pit, wherein the foundation pit comprises a normal foundation pit and an abnormal foundation pit;
(1.1) acquiring an image of a construction site foundation pit or soil in the foundation pit;
(1.2) detecting and obtaining the color of soil in the foundation pit, and comparing the detected color with a soil reference color preset in a database; wherein the reference colors include normal reference colors and abnormal reference colors;
(1.3) detecting the odor of the foundation pit of the construction site by adopting a PID detection instrument, and comparing the detected odor information with preset reference odor information, wherein the reference odor information comprises air components and concentration;
(1.4) if the comparison result of two or any one of the color or the smell shows abnormality, judging that the foundation pit is an abnormal foundation pit; if the comparison results of the color and the smell are normal, judging that the foundation pit is a normal foundation pit;
(2) Normal pit detection
(2.1) Foundation pit self-checking: sampling and self-detecting soil in a normal foundation pit, if the self-detecting result meets a preset repairing standard, directly entering the step (4), and if the self-detecting result does not meet the repairing standard, entering the step (2.2);
(2.2) application project supervision unit sampling detection: transmitting the self-detection result data to a project supervision unit, sampling and detecting the foundation pit by the project supervision unit, and performing the step (2.3) according to the detection result;
(2.3) overexcavation range analysis: comparing the polluted soil sampling detection result with the polluted site soil cleaning target concentration, comparing the concentrations of pollutants with the concentrations defined by the repairing targets one by one, if the project supervision unit sampling detection result does not exceed the polluted site soil cleaning repairing target concentration, then the self-detection result is preset with the repairing standard, directly implementing the step (4), if the project supervision unit sampling detection result does not meet the repairing standard, firstly determining the specific position of the foundation pit soil exceeding the standard according to the sampling point position of the polluted soil and the detection result of the point position, and if the range represented by the exceeding point position is an overexcavation range, the overexcavation range is: overbreak depth. Overbreak area;
(2.4) super-excavation construction stage: performing super-excavation construction on the foundation pit according to the specific analysis result of the super-excavation range analysis stage in the last step;
(3) Abnormal foundation pit detection
(3.1) Transmitting the acquired color and smell information of the abnormal foundation pit to a project supervision unit;
(3.2) pre-judging the overexcavation range: the project supervision unit judges the over-excavation range of the abnormal foundation pit, and the judging method comprises the following steps: firstly, judging the specific position of the foundation pit soil exceeding the standard according to the sampling point position of the polluted soil and the detection result of the point position, and if the sampling point soil exceeds the standard, the range represented by the exceeding point position is an overexcavation range;
(3.3) super-digging construction stage: if the pre-determined overbreak range is lower than 50m, carrying out foundation pit overbreak construction by a project supervision unit coordination organization, and operating according to the normal foundation pit flow in the step (2) after the overbreak construction is finished; if the pre-determined overbreak range is higher than 50m, sampling and detecting the abnormal foundation pit by a construction unit and a project supervision unit together, analyzing the overbreak range according to a sampling and detecting result, and organizing to carry out foundation pit overbreak construction;
(4) Foundation pit acceptance stage: after the over-digging of the abnormal foundation pit is completed, checking and accepting the foundation pit, if the checking and accepting are qualified, ending the foundation pit, and if the checking and accepting are not qualified, continuing the program from the pre-judging stage of the over-digging range until the foundation pit is qualified; when the foundation pit is tested, the sampling and detecting result of the polluted soil is compared with the soil cleaning target concentration of the polluted site, the concentrations of the pollutants are compared with the concentrations limited by the repairing target one by one, and if the concentrations do not exceed the limiting concentrations, the test and acceptance result is qualified.
In a preferred embodiment of the present invention, in step (2.2), the step of sampling and detecting the foundation pit by the project supervision unit is the same as the specific step of sampling and self-detecting the soil in the normal foundation pit in step (2.1).
In a preferred embodiment of the present invention, the step of sampling and detecting the abnormal foundation pit by the construction unit and the project supervision unit is the same as the specific step of sampling and self-detecting the soil in the normal foundation pit in the step (2.1).
In a preferred embodiment of the present invention, the specific steps of sampling and self-detecting soil in a normal foundation pit include: a systematic point distribution method is adopted at the bottom of a normal foundation pit, a sampling point is randomly arranged, then a grid passing through the sampling point is constructed, and soil is collected at each grid intersection; the side wall of the foundation pit adopts an equidistant point distribution method, the number of sampling points is determined according to the side length, and then the soil of the sampling points is collected; and detecting the pollution concentration of the collected soil sample, comparing and analyzing the detection result with the preset concentration of the soil cleaning and repairing target of the polluted site, comparing the concentration of each pollutant with the concentration limited by the repairing target one by one, and if the concentration does not exceed the limited concentration, obtaining the preset repairing standard from the detection result.
In a preferred embodiment of the invention, a 20 x 20m grid is used for dotting.
The beneficial effects of the invention are as follows: the pollution range of the foundation pit can be rapidly determined, so that the detailed overexcavation range is clear, the additional consumption of a man-machine is reduced, the detection period is shortened, and the inspection and acceptance efficiency of the foundation pit is greatly improved.
Drawings
For a clearer description of the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly introduced below, it being obvious that the drawings in the description below are only some embodiments of the present invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art, wherein:
FIG. 1 is a schematic diagram of a construction method for efficiently detecting a super-excavation probe for a construction process according to a preferred embodiment of the present invention;
fig. 2 is a schematic structural view of a high-efficiency super-excavation probe detection device for a construction process according to the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1-2, an embodiment of the present invention includes:
the efficient over-digging exploratory pit detection method for the construction process can be used for rapidly determining the over-digging range of the foundation pit in the construction process, so that the foundation pit detection period is shortened, the construction cost is reduced, and the inspection and acceptance efficiency of the foundation pit is greatly improved.
A high-efficiency super-digging probe pit detection method for a construction process comprises the following specific steps:
(1) Judging the state of the foundation pit, wherein the foundation pit comprises a normal foundation pit or an abnormal foundation pit, and comprehensively judging through the color and the smell of the foundation pit during judging.
(1.1) Collecting soil in the foundation pit of the construction site, and acquiring an image of the soil of the foundation pit, or directly acquiring an image of the foundation pit of the construction site.
(1.2) Detecting and obtaining the color of soil in a foundation pit, and comparing the detected color with a preset reference color in a database; wherein the reference colors include normal reference colors and abnormal reference colors; in this embodiment, the normal reference color is yellow, and the abnormal reference color is a heavy color such as black.
And (1.3) detecting the odor of the foundation pit of the construction site by using a PID detection instrument, and comparing the detected odor information with preset reference odor information, wherein the reference odor information can be set according to the odor concentration restoration standard of the foundation pit of the construction site, and the odor information comprises related information such as air components, concentration and the like.
(1.4) If the comparison result of two or any one of the color or the smell shows abnormality, judging that the foundation pit is an abnormal foundation pit; if the comparison results of the color and the smell are normal, judging that the foundation pit is a normal foundation pit.
(2) Normal pit detection
The normal foundation pit detection link comprises: self-checking of foundation pit, analysis of detection results, sampling and detection of application project supervision units, analysis of super-excavation range, super-excavation construction and foundation pit acceptance.
(2.1) Foundation pit self-checking: sampling and self-detecting soil in a normal foundation pit, if the self-detecting result meets a preset repair standard, directly entering the step (4), and if the self-detecting result does not meet the repair standard, entering the step (2.2).
The specific steps of sampling and self-detecting the soil in the normal foundation pit comprise: and (3) randomly arranging a sampling point at the bottom of a normal foundation pit by adopting a systematic point arranging method, then constructing a grid passing through the sampling point, arranging the points by adopting a 20 multiplied by 20m grid, and collecting soil at each grid intersection point. And the side wall of the foundation pit adopts an equidistant point distribution method, the number of sampling points is determined according to the side length, and then the soil of the sampling points is collected. And finally, detecting the pollution concentration of the collected soil sample, comparing and analyzing the detection result with the preset concentration of the soil cleaning and repairing target of the polluted site, comparing the concentrations of the pollutants with the concentration limited by the repairing target one by one, and if the concentration does not exceed the limited concentration, obtaining the preset repairing standard from the detection result.
(2.2) Application project supervision unit sampling detection: and (3) sending the self-detection result data to a project supervision unit, sampling and detecting the foundation pit by the project supervision unit, and performing the step (2.3) according to the detection result. The step of sampling and detecting the foundation pit by the project supervision unit is the same as the concrete step of sampling and self-detecting the soil in the normal foundation pit in the step (2.1).
(2.3) Overexcavation range analysis: and analyzing the overbreak range according to the sampling detection result of the project supervision unit: and comparing the polluted soil sampling detection result with the target concentration of the polluted site soil cleaning, comparing the concentrations of the pollutants with the concentration limited by the repair target one by one, and if the concentration does not exceed the limited concentration, obtaining a preset repair standard from the detection result. And (4) if the sampling and detecting result of the project supervision unit meets the soil cleaning and repairing target concentration of the polluted site, directly implementing the step (4). If the soil is not in accordance with the restoration standard, firstly determining the specific position of the foundation pit soil exceeding the standard according to the sampling point position of the polluted soil and the detection result of the point position, if the soil at the bottom of the foundation pit exceeds the standard, the range represented by the exceeding standard point position is an exceeding digging range, and similarly, the soil at the side wall of the foundation pit exceeds the standard, the analysis and judgment method is consistent, and the exceeding digging range is as follows: overbreak depth. Overbreak area.
The analysis standard is determined according to the detection result data, and can be specifically determined according to the actual condition of the project.
(2.4) Super-excavation construction stage: and according to the specific analysis result of the super-excavation range analysis stage in the last step, obtaining the detailed super-excavation range of the foundation pit, and organizing mechanical equipment and personnel to perform super-excavation construction on the foundation pit.
(3) Abnormal foundation pit detection
The abnormal foundation pit detection comprises the following steps: reporting project supervision unit stage, overexcavation range prejudging stage, overexcavation construction stage and foundation pit acceptance stage.
And (3.1) transmitting the acquired color and smell information of the abnormal foundation pit to a project supervision unit.
(3.2) Pre-judging the overexcavation range: the project supervision unit judges the over-excavation range of the abnormal foundation pit, and the judging method comprises the following steps: firstly, judging the specific position of the foundation pit soil exceeding the standard according to the sampling point position of the polluted soil and the detection result of the point position, if the soil at the bottom of the foundation pit exceeds the standard, the range represented by the exceeding point position is an exceeding digging range, and the analysis and judgment methods are consistent with each other when the soil at the side wall of the foundation pit exceeds the standard, wherein the exceeding digging range is as follows: overbreak depth. Overbreak area.
(3.3) Super-digging construction stage: if the pre-judging stage of the super-digging range is that the pre-judging super-digging is lower than 50m, the project supervision unit coordinates the construction of the super-digging of the foundation pit, and after the construction of the super-digging is finished, the operation is carried out according to the normal foundation pit flow. If the pre-judgment is higher than 50m, the construction unit and the project supervision unit jointly sample and detect the abnormal foundation pit, analyze the super-excavation range according to the sampling and detecting result, and organize the super-excavation construction of the foundation pit. The step of sampling and detecting the abnormal foundation pit by the construction unit and the project supervision unit is the same as the concrete step of sampling and self-detecting the soil in the normal foundation pit in the step (2.1).
(4) Foundation pit acceptance stage: and after the over-digging of the abnormal foundation pit is completed, applying for checking and accepting the foundation pit, ending the foundation pit if the checking and accepting are qualified, and continuing the program from the pre-judging stage of the over-digging range if the checking and accepting are unqualified until the foundation pit is qualified. When the foundation pit is tested, the sampling and detecting result of the polluted soil is compared with the soil cleaning target concentration of the polluted site, the concentrations of the pollutants are compared with the concentrations limited by the repairing target one by one, and if the concentrations do not exceed the limiting concentrations, the test and acceptance result is qualified.
Wherein, a structure that is used for high-efficient super probe pit soil detection sampling device of digging of work progress includes: the soil sampler, image acquisition device 1, visual identification device 2, the soil sampler is connected with image acquisition device, visual identification device respectively. The image acquisition device may employ various devices such as a camera and a video camera.
The soil sampler comprises a machine body 3, a sampling head 4 and a sample storage tube 5, wherein the sampling head is arranged at the bottom of the machine body, the sample storage tube is arranged in the machine body, and the sample storage tube is communicated with the sampling head.
The efficient super-digging probe pit detection method for the construction process has the beneficial effects that:
1. in the aspect of checking and accepting efficiency, for the unqualified foundation pit (abnormal foundation pit) of multiple times of overdrawing, the on-site overdrawing sampling is adjusted to firstly make a exploratory pit to determine the overdrawing depth and then the overdrawing is carried out, so that the overdrawing range can be rapidly determined, the detection period is shortened, the checking and accepting period is changed from uncontrollable to controllable, and the checking and accepting efficiency of the foundation pit is greatly improved.
2. In the aspect of cost of the labor machinery, the method reduces unnecessary extra-excavation steps, reduces construction links, and saves the consumption of labor and machinery cost.
The foregoing description is only illustrative of the present invention and is not intended to limit the scope of the invention, and all equivalent structures or equivalent processes or direct or indirect application in other related arts are included in the scope of the present invention.
Claims (5)
1. The efficient super-digging probe pit detection method for the construction process is characterized by comprising the following steps of:
(1) Judging the state of the foundation pit according to the color and the smell of the foundation pit, wherein the foundation pit comprises a normal foundation pit and an abnormal foundation pit;
(1.1) acquiring an image of a construction site foundation pit or soil in the foundation pit;
(1.2) detecting and obtaining the color of soil in the foundation pit, and comparing the detected color with a soil reference color preset in a database; wherein the reference colors include normal reference colors and abnormal reference colors;
(1.3) detecting the odor of the foundation pit of the construction site by adopting a PID detection instrument, and comparing the detected odor information with preset reference odor information, wherein the reference odor information comprises air components and concentration;
(1.4) if the comparison result of two or any one of the color or the smell shows abnormality, judging that the foundation pit is an abnormal foundation pit; if the comparison results of the color and the smell are normal, judging that the foundation pit is a normal foundation pit;
(2) Normal pit detection
(2.1) Foundation pit self-checking: sampling and self-detecting soil in a normal foundation pit, if the self-detecting result meets a preset repairing standard, directly entering the step (4), and if the self-detecting result does not meet the repairing standard, entering the step (2.2);
(2.2) application project supervision unit sampling detection: transmitting the self-detection result data to a project supervision unit, sampling and detecting the foundation pit by the project supervision unit, and performing the step (2.3) according to the detection result;
(2.3) overexcavation range analysis: comparing the polluted soil sampling detection result with the polluted site soil cleaning target concentration, comparing the concentrations of pollutants with the concentrations defined by the repairing targets one by one, if the project supervision unit sampling detection result does not exceed the polluted site soil cleaning repairing target concentration, then the self-detection result is preset with the repairing standard, directly implementing the step (4), if the project supervision unit sampling detection result does not meet the repairing standard, firstly determining the specific position of the foundation pit soil exceeding the standard according to the sampling point position of the polluted soil and the detection result of the point position, and if the range represented by the exceeding point position is an overexcavation range, the overexcavation range is: overbreak depth. Overbreak area;
(2.4) super-excavation construction stage: performing super-excavation construction on the foundation pit according to the specific analysis result of the super-excavation range analysis stage in the last step;
(3) Abnormal foundation pit detection
(3.1) Transmitting the acquired color and smell information of the abnormal foundation pit to a project supervision unit;
(3.2) pre-judging the overexcavation range: the project supervision unit judges the over-excavation range of the abnormal foundation pit, and the judging method comprises the following steps: firstly, judging the specific position of the foundation pit soil exceeding the standard according to the sampling point position of the polluted soil and the detection result of the point position, and if the sampling point soil exceeds the standard, the range represented by the exceeding point position is an overexcavation range;
(3.3) super-digging construction stage: if the pre-determined super-excavation range is lower than 50m 3, performing foundation pit super-excavation construction by a project supervision unit coordination organization, and operating according to the normal foundation pit flow in the step (2) after the super-excavation construction is finished; if the pre-determined overbreak range is higher than 50m 3, the construction unit and the project supervision unit jointly sample and detect the abnormal foundation pit, analyze the overbreak range according to the sampling and detecting result, and organize the foundation pit overbreak construction;
(4) Foundation pit acceptance stage: after the over-digging of the abnormal foundation pit is completed, applying for checking and accepting the foundation pit, ending the foundation pit if the checking and accepting are qualified, and continuing the step from the pre-judging stage of the over-digging range if the checking and accepting are not qualified until the foundation pit is qualified; when the foundation pit is tested, the sampling and detecting result of the polluted soil is compared with the soil cleaning target concentration of the polluted site, the concentrations of the pollutants are compared with the concentrations limited by the repairing target one by one, and if the concentrations do not exceed the limiting concentrations, the test and acceptance result is qualified.
2. The method for efficiently detecting the ultra-excavation probe pit for the construction process according to claim 1, wherein in the step (2.2), the step of sampling and detecting the foundation pit by the project supervision unit is the same as the specific step of sampling and self-detecting the soil in the normal foundation pit in the step (2.1).
3. The method for efficiently detecting the ultra-excavation pit for the construction process according to claim 1, wherein the step of sampling and detecting the abnormal foundation pit by the construction unit and the project supervision unit together is the same as the concrete step of sampling and self-detecting the soil in the normal foundation pit in the step (2.1).
4. The method for detecting the ultra-excavation probe pit in the construction process according to claim 1, wherein the specific step of sampling and self-detecting the soil in the normal foundation pit comprises the following steps: a systematic point distribution method is adopted at the bottom of a normal foundation pit, a sampling point is randomly arranged, then a grid passing through the sampling point is constructed, and soil is collected at each grid intersection; the side wall of the foundation pit adopts an equidistant point distribution method, the number of sampling points is determined according to the side length, and then the soil of the sampling points is collected; and detecting the pollution concentration of the collected soil sample, comparing and analyzing the detection result with the preset concentration of the soil cleaning and repairing target of the polluted site, comparing the concentration of each pollutant with the concentration limited by the repairing target one by one, and if the concentration does not exceed the limited concentration, obtaining the preset repairing standard from the detection result.
5. The method for efficiently detecting the ultra-excavation probe pit for the construction process according to claim 4, wherein the spotting is performed by using a 20 x 20m grid.
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| CN106245652A (en) * | 2016-08-04 | 2016-12-21 | 中建三局第二建设工程有限责任公司 | A kind of construction method of deep foundation pit earthwork digging near a river |
| CN107587493A (en) * | 2017-09-01 | 2018-01-16 | 青岛理工大学 | Foundation pit excavation monitoring and early warning method based on neural network |
| CN110000205A (en) * | 2019-04-24 | 2019-07-12 | 广西博世科环保科技股份有限公司 | The original place Ex-situ remediation method of pollution of river soil |
| CN110359467A (en) * | 2019-07-12 | 2019-10-22 | 江苏南通二建集团有限公司 | A kind of construction method that base pit engineering high-pressure rotary jet grouting pile is reinforced |
| CN215066175U (en) * | 2020-12-28 | 2021-12-07 | 苏州精英环保有限公司 | A high-efficient super-excavation exploration pit detection device for work progress |
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