CN1657718A

CN1657718A - Method for repairing sewer using water-proof film lining

Info

Publication number: CN1657718A
Application number: CN 200410016365
Authority: CN
Inventors: 李孝男; 陶金龙; 张阿林
Original assignee: SHANGHAI PUTUO MUNICIPAL ENGINEERING ADMINISTRATION
Current assignee: SHANGHAI PUTUO MUNICIPAL ENGINEERING ADMINISTRATION
Priority date: 2004-02-17
Filing date: 2004-02-17
Publication date: 2005-08-24
Anticipated expiration: 2024-02-17
Also published as: CN1296577C

Abstract

A method for repairing gulley drain with waterproof film, concretely including the following steps: stop water inject pulping and solidify soil; process with the destroyed point; set waterproof film; seal the edge; maintenance. During the process of repairing gulley drain in city and industrial area, the invention uses repairing technology in pipe, without need for digging largely on the road, less repairing cost, short term, simple operation, reliable quality, great practice, is suitable for being extended in gulley drain repairing in our country.

Description

A kind of method that adopts the waterproof film liner to repair sewer

Technical field

The present invention relates to the recovery technique of municipal engineering, specifically a kind of method that adopts the waterproof film liner to repair sewer.

Background technology

Generally all adopt excavation type comb job practices in the drainage pipe immersed tube of city, industrial occupancy is repaired, this job practices needs the road surface heavy excavation, and is time-consuming, influence traffic, especially in the city, this job practices is difficulty day by day, and the pressure that brings to urban traffic is too big.Also have at present and adopt external trenchless technology to repair sewer, though solved the problem that the road surface heavy excavation influences traffic, but this restorative procedure needs special construction machinery and the patching material of import, there is the repair cost height, complex operation, deficiencies such as long construction period are difficult to popularize in an all-round way in China's sewer is repaired and use.

Summary of the invention

A kind of method that adopts the waterproof film liner to repair sewer that the objective of the invention is to provide at the deficiencies in the prior art, it is repaired in pipe, do not need the road surface heavy excavation, repair cost is low, easy and simple to handle, short construction period, repairing quality is reliable, have very strong practicality, be convenient to China and in sewer is repaired, popularize use in an all-round way.

The concrete technical scheme that realizes the object of the invention is:

A kind of method that adopts the waterproof film liner to repair sewer, it comprises following concrete steps:

A, sealing leak stopping: with the sewer pipe shutoff, the desilting of drawing water with water under high pressure flush clean tube wall, is sought seepage, breaking point;

B, the solid soil of slip casting: open several grout holes from inside to outside at the pipe joint place, in managing, outwards the soil body outside the pipe joint pipe and the inspection shaft bottom soil body are carried out slip casting, the firm soil body;

C, breaking point are handled: adopt cement to accelerate to burn smart mode to the 1-3mm slit and repair; After adopting the water blockoff mortar to fill out embedding to the 4-10mm sealing, enrich sealing with the polyurethane injection; Adopt filleting technology to repair to the 11-30mm sealing;

D, the waterproof film liner is set: (1), pipe joint surfacing: the inwall with both sides, emery wheel hacking pipe joint center makes it have roughness; (2), implement the end and criticize: criticize at the bottom of scraping pasty state on the inwall of the both sides, pipe joint center of hacking batch, thickness remains on 2-3mm (3), lays grid cloth: treat the end criticize stiff after, lay grid cloth thereon; (4), face is criticized construction: criticize the pulpous state waterproof face of strike-ofing and criticize on grid cloth, thickness remains on 3-4mm;

E, edge sealing: with solvent-free epoxy resin to waterproof film liner both sides mouth edge sealing;

F, maintenance: natural curing water flowing after seven days.

Described slurry is made into cement, flyash, water glass.

Criticize and adopt polymer concrete dry-powder to add water furnishing pasty state at the described end.

Described grid cloth is fiberglass gridding cloth or chemical fibre grid cloth.

Described batch is adopted polymer concrete dry-powder addition polymerization compound cement based emulsion furnishing pasty state.

The present invention does not need the road surface heavy excavation just can repair immersed tube in repair in city, industrial occupancy sewer pipe, and it is low to have a rehabilitation expense, short construction period, easy and simple to handle, repairing quality is reliable, has very strong practicality, is convenient to China and popularizes use in an all-round way in sewer is repaired.

The specific embodiment:

1, sealing leak stopping:

At the pipeline section place blocking pipe that " immersed tube " phenomenon takes place, drain ponding in the pipe, poison gas situation in the detector tube, mud in the purge tube, with water under high pressure flush clean tube wall, enter then and seek the seepage breaking point in the pipeline, adopt the leak stopping of quick water blockoff mortar, that does not have obvious seepage breakage can carry out the construction of the grouting reinforcement soil body earlier in pipe.The emphasis of slip casting is fixed to the filling of the pipe joint place outer soil body of pipe and the inspection shaft bottom soil body, and plays the effect that water proof blocks water.Thereby the position of injected hole should be chosen in apart from per pass interface 0.30M place: require every pipe joint pipeline joint place is opened 4 injected holes up and down at least.Both sides grout hole about φ 800 following pipelines should be opened in pipe on the upper side; φ 1200 above pipelines should be opened in pipe position on the lower side, as the injected hole spacing excessive also should augment injected hole, do not produce phenomenon out of stock with the block water section of water proof consolidated earth mass of guarantee.1 of grout hole is offered in inspection shaft bottom, should control slurry denseness and by the required pressure of the grouting degree of depth during grouting well, and [following (containing φ 1000) the slip casting degree of depth of φ 1000 pipelines must not be less than 1.0M; φ 1200～φ 1800 slip casting degree of depth must not be less than 1.5M; The φ 2000 above slip casting degree of depth must not little 2.0M], answering pressure is done adjustment gradually from deep to shallow when grouting operation.Slip casting mixing ratio by weight [No. 525 cement: flyash: water glass, 0.9: 0.1: 30% (being radix promptly)] with concrete and coal ash weight sum.

2, breaking point is handled:

Adopting cement to accelerate to burn smart mode to 1～3mm slit repairs.

After adopting quick water blockoff mortar to fill out embedding to 4～10mm sealing, enrich sealing with the polyurethane injection again.

11～30mm sealing (interface does not misplace) employing filleting technology is repaired.

3, pipe joint is handled:

Waist hoop position exceeds the cement mortar of tube wall in cutting earlier, inwall with each 26-40 centimetre width of both sides, electric wheel hacking per pass interface center, and guaranteeing 52-80 centimetre width inner wall surface cleaning, flat, solid, the no greasy dirt of face, no loose and have certain roughness, the adhesion stress with tube wall is criticized at the enhancing end.(annotate: before the hacking in accordance with regulations width line location guarantee the profile standard.)

4, implementing the end criticizes:

Polyalcohol cement basis elastic water-proof film dry powder is added the thick pasty state of water furnishing, completely criticize surface, hacking place with the mud plate, width is each 0.25-0.4M of center with the interface, and thickness is not less than 2mm.(about 1: 4 of gouache ratio)

5, lay grid cloth

Criticize construction the end of at and promptly spread the wide fiberglass gridding cloth of one deck 48-78 centimetre or other chemical fibre grid cloth after about 5～6 hours.Grid cloth girth joining seam should be no less than 10 centimeters, and grid cloth is laid and must be close to the end and pull on, and rake angle can not be arranged, arches upward, phenomenon such as wrinkle, and the grid cloth of pipe top bit is used yoke and supported firmly, prevents sagging falling.

6, face is criticized construction:

Promptly carry out the waterproof face after grid cloth is laid and finished and criticize construction.Polymer concrete dry-powder and polymer cement base emulsion are pressed liquid: powder=4: 5, adopt special electric to stir instrument and constantly stir into uniform mortar shape, must not contain powder ball, grain piece in the mortar shape.Each charging must be removed clout foreign material in the bucket clean.Criticize with the mud plate and to scrape branch three roads and pull on, the fiber mesh cover is not had the end of at.After treating that one waterproof film surface is done, carry out second road again, the 3rd road is criticized and is scraped, this layer composite elastic grid cloth waterproof film thickness of inner lining should be no less than 4.5mm, criticize and add face and criticize about the about 6.5mm of gross thickness at the end, two limit mouths are made little chamfering.

7, edge sealing

With solvent-free epoxy resin to waterproof film liner both sides mouth edge sealing, to increase limit mouth adhesion stress and sealing.

8, maintenance

Natural curing water flowing after at least 7 days (with good conditionsi, curing time is longer better).

After above work progress enforcement, just form a kind of not only water-fast but also waterproof in the pipeline, and novel lining material with certain toughness and tensile strength, can resist structure, drainage pipe interface etc. because of the crack of expanding, shrinking or slight disturbance causing, phenomenon such as leak, easy construction, no seam, good integrity, rate of hardening is fast, can with multiple base material secure bond, be applicable to preventive overhaul engineering to drainage pipe.

Claims

1, a kind of method that adopts the waterproof film liner to repair sewer is characterized in that it comprises following concrete steps:

D, the waterproof film liner is set: (1), pipe joint surfacing: the inwall with both sides, emery wheel hacking pipe joint center makes it have roughness; (2), implement the end and criticize: criticize at the bottom of scraping pasty state on the inwall of the both sides, pipe joint center of hacking batch, thickness remains on 2-3mm; (3), lay grid cloth: treat the end criticize dry and hard after, lay grid cloth thereon; (4), face is criticized construction: criticize the pulpous state waterproof face of strike-ofing and criticize on grid cloth, thickness remains on 3-4mm;

F, maintenance: natural curing water flowing after seven days.

2, restorative procedure according to claim 1 is characterized in that the slurry of being annotated is made into cement, flyash, water glass.

3, restorative procedure according to claim 1 is characterized in that the end criticizes to adopt polymer concrete dry-powder to add water furnishing pasty state.

4, repair method according to claim 1 is characterized in that grid cloth is fiberglass gridding cloth or chemical fibre grid cloth.

5, repair method according to claim 1 is characterized in that face is criticized to adopt polymer concrete dry-powder addition polymerization compound cement based emulsion furnishing pasty state.