CN105673952A

CN105673952A - Special-shaped concrete pipeline for municipal wastewater

Info

Publication number: CN105673952A
Application number: CN201610238133.1A
Authority: CN
Inventors: 姜守信; 刘春有
Original assignee: Individual
Current assignee: Beijing New Environmental Protection Technology Co Ltd
Priority date: 2016-04-18
Filing date: 2016-04-18
Publication date: 2016-06-15

Abstract

The invention relates to a special-shaped concrete pipeline for municipal wastewater. The pipeline comprises a cylindrical pipeline body and is characterized in that the cross section of an inner cavity of the pipeline body is specially shaped. Compared with the prior art, the pipeline has the advantages that the novel wastewater concrete pipeline is provided with the special-shaped inner cavity, discharge of wastewater generated by 50,000 people can be achieved in the short term, and the requirement of 500,000 people can be met in the long run; huge waste caused by later-stage repeated construction can be avoided, and influences on life of nearby residents are avoided; meanwhile, the drainage function of a rainwater pipeline can be assisted to solve the problem of urban waterlogging, stability is high, and the situation that natural disasters affect normal life of urban residents is prevented; an anti-corrosion coating is brushed inside, so that corrosion to the cement pipe is prevented, service life is prolonged, the resistance of the pipe to wastewater is reduced, the flow velocity of wastewater is increased, the leakage property of a pipe orifice is improved, and the design working life can reach 100 years.

Description

Municipal wastewater abnormity concrete pipe

Technical field

The invention belongs to municipal pipeline, particularly relate to the municipal wastewater abnormity concrete pipe that a kind of design life is 100 years.

Background technology

At present, China most cities is the sewer pipe of concrete material, but owing to traditional pipe of concrete, concrete reinforced pipe and cast iron pipe etc. exist the impact on pipeline foundation than more serious leakage problems and other Municipal Engineering Construction, cause pipe of concrete and joint badly broken thereof, cause that sewage permeates the ground, having a strong impact on the groundwater quality in city, these problems fully highlight on the pipe network of Old City city. Accelerated development sewage discharge problem along with city-building, it has also become urban development needs the most important thing problem solved. Sewer line is different from rainwater pipeline, and it must be designed according to the blowdown flow rate in region. Code requirement sewage discharge must have flow velocity in pipe, it is to avoid organic deposition in sewage, causes pipeline to block. According to design specification requirement, conventional soil pipe diameter is 1 meter, and the pipeline of this bore can not meet again the increase of cities and towns accelerated development and population. Meanwhile, existing tubing adopts the mouth of pipe form of PCCP feed pipe, and what adopt during making is steel bellmouth, and concrete is different from the constriction coefficient of steel bellmouth, and the prefabricated cement mouth of pipe gap occurs between easy and steel bellmouth after solidifying, and lifts also very easily impaired; Concrete duct adopts Germany's core vibrations technology, and during owing to making, raw material is dryness concrete, and after the demoulding, pipe outward appearance is coarse, and pipe shape deformation is in ellipse; The conventional socket inside the pipe of concrete mouth of pipe is less, and bellmouth is big. In its jack-in process, run into correction situation lower nozzle and be easily damaged; The mouth of pipe is irregular, causes sealing ring can not play hermetic seal effect. Novel municipal wastewater pipeline having multi-functions is urgently researched and developed in urban construction.

Summary of the invention

It is an object of the invention to overcome the deficiency of above-mentioned technology, and a kind of municipal wastewater abnormity concrete pipe is provided, design life is 100 years, not only can meet the demand of recent 50,000 people's sewage discharges, the amplification at a specified future date demand to 500,000 people's sewage discharges can be met again, it is to avoid the huge waste that later stage repeated construction causes;

The present invention has multi-functional, it is also possible to the drain function of auxiliary rainwater pipeline, solves the waterlogging problem in city, it is prevented that Effect of Natural Disaster town dweller orthobiosis.

The present invention for achieving the above object, by the following technical solutions: a kind of municipal wastewater abnormity concrete pipe, is cylindrical pipeline body including profile, it is characterized in that: described pipeline body inner chamber lateral cross section shape is in abnormity inner chamber.

The lateral cross section shape of described pipeline body inner chamber is the semi-circular arc by upper and lower two different-diameters by the smooth kiss of symmetrical circular arc to be connect and constitutes pipeline body abnormity inner chamber.

The top semi-circular arc radius of described pipeline body abnormity inner chamber is 400-800mm, and lower semicircular arc radius is 200-425mm.

The lateral cross section shaped part semi-circular arc of described pipeline body abnormity inner chamber is symmetrically arranged on two with preformed hole, described preformed hole longitudinally straight through tube body, runs through steel strand wires in described preformed hole.

In described pipeline body abnormity, cavity wall is provided with corrosion-inhibiting coating.

Described pipeline body both ends of the surface are smooth end face, pipeline body both ends of the surface are respectively equipped with grafting tongue and groove and accept tongue and groove, described grafting tongue and groove is female grafting tongue and groove end lower than pipeline body end face, is provided with the grafting taper seat of indent inside described grafting tongue and groove end from pipeline body wall thickness central line to the mouth of pipe; Described undertaking tongue and groove is that male type accepts tongue and groove end, is provided with the grafting taper seat of evagination outside described undertaking tongue and groove end from pipeline body wall thickness central line to the mouth of pipe.

The angle of described grafting taper seat and pipeline body wall thickness central line is 12 °-15 °.

Described undertaking tongue and groove is provided with the locating slot of fixing seal rubber ring.

Described grafting tongue and groove and undertaking tongue and groove are respectively equipped with trapezoidal groove by paracentral medial surface.

Beneficial effect: compared with prior art, the Novel sewage concrete pipe of present invention design, in abnormity inner chamber, not only can meet the sewage discharge of 50,000 people in the recent period, and long term can meet again 500,000 Man's Demands. The repeated construction that can avoid the later stage causes huge waste, it is to avoid affect the life of nearby residents, can also assist the drain function of rainwater pipeline simultaneously, solves the waterlogging problem in city, it is prevented that Effect of Natural Disaster town dweller orthobiosis. Inside is brushed with corrosion-inhibiting coating, it is prevented that the corrosion to pipe of cement, improves service life, reduces the tubing resistance to sewage current, accelerates the flow velocity of sewage current, and the leakage performance of the mouth of pipe is improved, and design life was up to 100 years.

Accompanying drawing explanation

Fig. 1 is the structural representation of the present invention;

The sealing that Fig. 2 is two pipeline docking uses state diagram;

The partial enlarged drawing of grafting tongue and groove and undertaking tongue and groove when Fig. 3 is two pipeline docking.

In figure: 1, pipeline body abnormity inner chamber, 1-1, top semi-circular arc, 1-2, lower semicircular circular arc, 1-3, circular arc, 1-4,2, pipeline body, 3, preformed hole, 4, corrosion-inhibiting coating, 5, grafting tongue and groove, 5-1, undertaking tongue and groove, 5-2, grafting taper seat angle, 6, locating slot, 7, trapezoidal groove, 8, sealing rubber ring, 9, asbestos pad.

Detailed description of the invention

The specific embodiment of the present invention is described in detail below in conjunction with preferred embodiment.

Referring to accompanying drawing, a kind of municipal wastewater abnormity concrete pipe, is cylindrical pipeline body 2 including profile, and described pipeline body inner chamber lateral cross section shape is in abnormity inner chamber. The lateral cross section shape of described pipeline body inner chamber is semi-circular arc 1-1,1-2 by upper and lower two different-diameters by the smooth kiss of symmetrical circular arc 1-3 to be connect and constitutes pipeline body abnormity inner chamber 1. The top semi-circular arc radius of described pipeline body abnormity inner chamber is 400-800mm, and lower semicircular arc radius is 200-425mm.The present embodiment top semi-circular arc radius is 800mm, and lower semicircular arc radius is 400mm, duct length 3M. The specification of design pipeline body abnormity inner chamber: lower semicircular arc radius-top semi-circular arc radius is respectively as follows: 200-400mm, 250-500mm, 300-600mm, 350-700mm, 400-750mm and 750-1500mm. Abnormity concrete pipe is extruded through grinding tool vibrations by armored concrete. Pipeline body abnormity inner chamber both can guarantee that the flow velocity of sewage, avoid foreign material deposition blocking pipeline, such as when urban population 50,000 people, the caliber of bottom 400mm just can meet the discharge capacity of sewage, when urban population increases to 500,000 people, the discharge capacity of sewage increases, and the caliber of bottom 400mm can not meet needs, now the caliber of top 800mm simultaneously works as effect, still can ensure that the discharge capacity of sewage. Work as rainy season set at ordinary times, it is also possible to auxiliary cities and towns are as the use of draining, and one-time investment a century is enjoyed.

The lateral cross section shaped part semi-circular arc of described pipeline body abnormity inner chamber is symmetrically arranged on two with preformed hole 3, described preformed hole longitudinally straight through tube body, runs through steel strand wires (not shown) in described preformed hole. The diameter of two preformed holes of the present embodiment is 120mm, both can play the deadweight alleviating pipeline body, can run through again the steel strand wires of Shi Hanzhang after pipe jacking construction completes. Steel strand tension completes grouting behind shaft or drift lining and fills. Shi Hanzhang steel strand wires not only increase the globality of this section of sewer line, increase the stability of pipeline, but also further ensure that the shock resistance of pipeline, prevent pipeline displacement, work progress need to the air-supply of equipment cooling, preformed hole plays again and send wind action, it is achieved that the function that a hole is multiplex.

In described pipeline body abnormity, cavity wall is provided with corrosion-inhibiting coating 4. Resident's sewage in cities and towns mostly contains acid and alkaline matter, because sewage has corrosion with acid and alkaline matter for ordinary cement pipe, inside is brushed with corrosion-inhibiting coating, prevent the corrosion to pipe of cement, improve service life, reduce the tubing resistance to sewage current simultaneously, accelerate the flow velocity of sewage current.

Described pipeline body both ends of the surface are smooth end face, and pipeline body both ends of the surface are respectively equipped with grafting tongue and groove 5 and accept tongue and groove 5-1, and described grafting tongue and groove is female grafting tongue and groove end lower than pipeline body end face, and being grafting tongue and groove is inside recessed pipeline body end face; It is provided with the grafting taper seat of indent from pipeline body wall thickness central line to the mouth of pipe inside described grafting tongue and groove end; Described undertaking tongue and groove is that male type accepts tongue and groove end, is provided with the grafting taper seat of evagination outside described undertaking tongue and groove end from pipeline body wall thickness central line to the mouth of pipe. The angle 5-3 of described grafting taper seat and pipeline body wall thickness central line is 12 °-15 °. Concrete pipe accepts the advantage with splicing interface; In pipe pushing technology, stress surface, at mouth of pipe place, is accepted and splicing interface uniform force, the tapering of junction design, it is ensured that pipeline is adjustable when installing, and will not injure the mouth of pipe.

Referring to Fig. 3, the preferred version of the present embodiment is, described undertaking tongue and groove is provided with the locating slot 6 of fixing seal rubber ring 8. Two, position of sealing ring design is hollow and three to groove; (separate case application) is functionally equivalent to four roads and seals; sealing ring width 60mm; thus the flexible combination protecting the mouth of pipe is not impaired; the material of sealing ring adopts silastic material; there is durable antiseptic property and elastic preferably, guaranteed the tight linking of interface by the crush seal circle of concrete interface.

Described grafting tongue and groove and undertaking tongue and groove are respectively equipped with trapezoidal groove 7 by paracentral medial surface. Inside pipe, design has trapezoidal groove, after the complete two pipe grafting of pipe jacking construction, trapezoidal groove shape assumes diamond in shape shape groove, diamond shaped groove filled polyurethane sealing compound, improve the sealing of sewage conduct further, diamond shaped groove structure ensures that polyurethane sealant does not fall out, and plays the effect that insides of pipes seals.

Adopt asbestos pad 9 as anti-crushing pad between the mouth of pipe of the municipal wastewater abnormity concrete pipe being mutually inserted, asbestos pad can play antihunt action, the resilience of asbestos pad is less, the requirement of design can be reached, retain certain design gap, the problem brought to pipeline of expanding with heat and contract with cold will not be produced.

Municipal wastewater abnormity concrete pipe processing technology adopts self-compacting concrete processing technology, it is ensured that concrete secret room degree; Improving productivity ratio, owing to vibrating, the time of concreting significantly shortens, and labor strength is greatly lowered, it is necessary to the minimizing of workman's number. Improving the environment of work, improve the quality of concrete surface, do not have tube surfaces bubble or voids and pits, it is not necessary to secondary carries out skin patching, and tube surfaces is smooth, degree of compaction is good, increases the mobility of sewage. The general 3M of pipe range, has gap 10mm after two pipe grafting.

The above-mentioned detailed description this kind of municipal wastewater abnormity concrete pipe carried out with reference to embodiment; it is illustrative rather than determinate; can according to restriction scope list several embodiments; therefore without departing from changing and modifications under present general inventive concept, should belong within protection scope of the present invention.

Claims

1. a municipal wastewater abnormity concrete pipe, is cylindrical pipeline body including profile, it is characterized in that: described pipeline body inner chamber lateral cross section shape is in abnormity inner chamber.

2. municipal wastewater according to claim 1 abnormity concrete pipe, is characterized in that: the lateral cross section shape of described pipeline body inner chamber is the semi-circular arc by upper and lower two different-diameters to be smoothed kiss by symmetrical circular arc and connect and constitute pipeline body abnormity inner chamber.

3. municipal wastewater according to claim 2 abnormity concrete pipe, is characterized in that: the top semi-circular arc radius of described pipeline body abnormity inner chamber is 400-800mm, and lower semicircular arc radius is 200-425mm.

4. the abnormity concrete pipe of the municipal wastewater according to Claims 2 or 3, it is characterized in that: the lateral cross section shaped part semi-circular arc of described pipeline body abnormity inner chamber is symmetrically arranged on two with preformed hole, described preformed hole longitudinally straight through tube body, runs through steel strand wires in described preformed hole.

5. municipal wastewater according to claim 4 abnormity concrete pipe, is characterized in that: in described pipeline body abnormity, cavity wall is provided with corrosion-inhibiting coating.

6. municipal wastewater according to claim 1 abnormity concrete pipe, it is characterized in that: described pipeline body both ends of the surface are smooth end face, pipeline body both ends of the surface are respectively equipped with grafting tongue and groove and accept tongue and groove, described grafting tongue and groove is female grafting tongue and groove end lower than pipeline body end face, is provided with the grafting taper seat of indent inside described grafting tongue and groove end from pipeline body wall thickness central line to the mouth of pipe; Described undertaking tongue and groove is that male type accepts tongue and groove end, is provided with the grafting taper seat of evagination outside described undertaking tongue and groove end from pipeline body wall thickness central line to the mouth of pipe.

7. municipal wastewater according to claim 6 abnormity concrete pipe, is characterized in that: the angle of described grafting taper seat and pipeline body wall thickness central line is 12 °-15 °.

8. municipal wastewater according to claim 6 abnormity concrete pipe, is characterized in that: described undertaking tongue and groove is provided with the locating slot of fixing seal rubber ring.

9. municipal wastewater according to claim 6 abnormity concrete pipe, is characterized in that: described grafting tongue and groove and undertaking tongue and groove are respectively equipped with trapezoidal groove by paracentral medial surface.