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Method for repairing underground pipeline without digging

A technology of underground pipelines and repair methods, which is applied to pipe components, pipes/pipe joints/fittings, mechanical equipment, etc., can solve problems such as poor hardening of lining materials, jointed pipe mouths, and untreated pipe mouths, etc., to achieve Good social and economic benefits, low noise, and resource-saving effects

Inactive Publication Date: 2010-02-17
管丽环境技术(上海)有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the past, when the repairing pipe lining material was used to form a lining pipe inside the old pipeline, the pipe mouth was not treated, and the pipe mouth could not be integrated with the well wall of the inspection well to prevent leakage.
Also, if groundwater leaks from the damaged part of the underground pipeline during construction, the thermosetting resin impregnated in the material will mix with groundwater, which will increase the occurrence of poor hardening of a part of the lining material.

Method used

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  • Method for repairing underground pipeline without digging
  • Method for repairing underground pipeline without digging

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Non-excavation repair of underground pipelines of industrial sewage pipes in a section of Shanghai.

[0035] First of all, after the interpretation and evaluation of the image data of the underground pipeline through CCTV video inspection, it is found that the interior of the pipeline has been severely corroded, and the corrosion of the pipeline has a tendency to be more serious. The load capacity of the pipeline itself is reduced, and the vibration of the road vehicle will cause the pipeline to rupture. , and then cause the road surface to subside and collapse, which needs to be repaired in time.

[0036] Due to the heavy traffic on this section of the road, if large-scale excavation is used for repairs, the traffic will be seriously affected. Moreover, the construction period is long, the construction noise is large, and there is a lot of construction waste, which also has a great impact on the factory production and the surrounding environment.

[0037] Therefore, t...

Embodiment 2

[0051] In embodiment 1, add following operation:

[0052] After cutting at the position where the lining material nozzle of the new inner lining pipe (4) stretches out 5-6cm, adopt quick cement to make a 45 degree chamfer between the inner lining material and the inspection well wall. As a result, the nozzle part of the lining pipe material after construction is kept smooth, and can be integrated with the well wall of the inspection well. This can achieve the purpose of anti-leakage and protection of the mouth of the nozzle.

Embodiment 3

[0054] In embodiment 2, adding following operation:

[0055] When the thermosetting resin hose is hardened and formed, a layer of high-strength lining new pipe is formed in the old pipe. At the same time, the water pressure 3.0m above the ground is used to make the inner liner pipe expand and stick to the old pipe. inner wall.

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Abstract

The invention relates to a method for repairing an underground pipeline without digging, which comprises the following steps: (1) blocking and cleaning an old sewage pipeline needing repair and usingclosed circuit TV system (CCTV) equipment to detect the inner part of the pipeline; (2) delivering a waterproof barrel-shaped auxiliary lining hose pipe into the pipeline and injecting thermosetting resin to form a resin hose pipe; (3) turning over and inserting the resin hose pipe and a warm water delivery pipe for heating into the waterproof barrel-shaped auxiliary lining hose pipe; (4) expanding the resin hose pipe with water and compressed air so that the resin hose pipe is tightly attached to the inner wall of an old pipe, circularly heating by warm water and hardening and molding the thermosetting resin hose pipe so that the inner wall of the old pipe forms a new lining pipe with high strength; (5) opening pipe openings at both ends of the new lining pipe by cutting to smooth the pipeline; and (6) cutting at the extending positions of the pipe openings of the new lining pipe, which are positioned in the well wall of a check well. The method can prevent leakage, protect the pipe openings, prevent the thermosetting resin injected into the lining hose pipe from being mixed with underground water and prevent a poor phenomenon of lining material part hardening.

Description

technical field [0001] The present invention relates to the improved invention of the overall repair technology of municipal drainage underground pipes, agricultural water underground pipes, industrial water underground pipes, tap water underground pipes, gas underground pipes and other underground pipes. Specifically, the present invention relates to a trenchless repair of underground pipes Construction method. Background technique [0002] In the past, in order to repair the damage of municipal drainage underground pipes, agricultural water underground pipes, industrial water underground pipes, tap water underground pipes, gas underground pipes and other underground pipes, large-scale excavation on the ground will cause serious impact on traffic, and The construction period is long, the construction noise is loud, and there is a lot of engineering waste, which also has a great impact on the surrounding environment. [0003] For this, as figure 1 As shown, the emerging te...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L55/162F16L55/165
Inventor 孙跃平
Owner 管丽环境技术(上海)有限公司
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