Underground traction type trenchless pipeline repair method

A kind of pipeline repair, trenchless technology, applied in the direction of pipe components, pipes/pipe joints/pipes, soil protection, etc., can solve the problems of excavation, repair and replacement of pipes, large traffic impact, etc., to achieve small impact and extended use. effect of life

Active Publication Date: 2020-01-24
南京华享环境科技有限公司
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Problems solved by technology

[0004] The invention provides an underground traction type non-excavation pipeline repair method, which aims to

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  • Underground traction type trenchless pipeline repair method
  • Underground traction type trenchless pipeline repair method

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Embodiment Construction

[0023] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0024] see Figure 1-2 , the present invention provides a technical solution: an underground traction type non-excavation pipeline repair method, comprising the following steps:

[0025] Step 1: install a baffle plate 10 in the first construction well 3 on the side of the collapsed position 2 of the pipe body 1 to close the input pipeline 5 draining water to the first construction well 3 .

[0026] Wherein, an inflatable bag 11 is fixed on one side of the baffle plate 10, and the two sides of the collapsed position 2 of the pipe body 1 are respectively the input pipeline 5 and the output pipeline ...

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Abstract

The invention is applicable to the technical field of pipeline repair, and provides an underground traction type trenchless pipeline repair method. Firstly, a baffle is installed in a first construction well at one side of a collapse position of a pipe body to seal an input pipeline for draining water to the first construction well, a guide block is placed in the pipe body from the first construction well, one end of the guide block is connected with one end of a hose, then the front end of the guide block is dragged to move to a second construction well, and the guide block is moved to the collapse position of the pipe body to support the collapse position, soil reinforcing slurry is filled in the soil layer around the collapse position, the soil reinforcing slurry is a polyurethane chemical grouting material, after the reinforcing slurry is solidified, the guide block is continuously dragged, the hose is put in the pipe body and completely covers the collapse position, the hose is made to adhere to and be solidified with the inner wall of the pipe body, so that the collapse position of the pipe body is sealed and repaired, the whole process does not need to excavate the ground, the influence on environment and traffic is small, and the service life of a pipeline can be prolonged.

Description

technical field [0001] The invention belongs to the technical field of pipeline repair, in particular to an underground traction type non-excavation pipeline repair method. Background technique [0002] At the end of the last century, due to its special structure and performance, chemical building material pipes have been widely used in the field of drainage pipes, and their maximum diameter can reach 1m or even higher. During the inspection, it was found that most of the chemical building material pipes had structural defects such as deformation, rupture and even collapse. This structural defect leads to the reduction of the flow area of ​​the original pipeline, seriously affects the flow capacity of the pipeline, and then causes urban waterlogging disasters, and in severe cases, it will also lead to road surface subsidence and casualties. The land reclamation and lake reclamation areas are mostly weak formations, and such defects are more obvious. [0003] In view of the...

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Application Information

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IPC IPC(8): F16L55/165E02D3/12
CPCE02D3/12E02D2250/003F16L55/165
Inventor 顾新民
Owner 南京华享环境科技有限公司
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