Underground pipeline sedimentation repair high polymer membrane bag grouting method

一种地下管道、高聚物膜的技术，应用在下水管道系统、填方、管元件等方向，达到节约工期、防止二次沉降、节省造价的效果

Active Publication Date: 2015-05-27
SAFEKEY ENG TECHZHENGZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to develop a new high polymer film bag grouting method for the subsidence repair of underground pipelines to solve the subsidence problem of underground pipelines caused by poor geology such as soft soil layers, and provide advanced, efficient, economical, Practical technical measures

Method used

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  • Underground pipeline sedimentation repair high polymer membrane bag grouting method
  • Underground pipeline sedimentation repair high polymer membrane bag grouting method
  • Underground pipeline sedimentation repair high polymer membrane bag grouting method

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Experimental program
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Embodiment

[0035] The present invention will be further described in conjunction with the accompanying drawings.

[0036] (1) Use pipeline closed-circuit television inspection technology (CCTV) to conduct a comprehensive detection of underground pipelines to determine the location of the settlement pipe section and the settlement amount.

[0037] (2) Drill film bag placement holes

[0038] For the pipe section 1 that needs to be lifted, along the diameter direction of the end of the sinking section of the pipe, the holes 2 are drilled at intervals of 0.3-0.4m, such as figure 1 with figure 2 As shown, the pore diameter is about 5-12cm, and the pore depth is about 20-40cm.

[0039] (3) Place the film bag

[0040] Put the grouting pipe 4 into the opening end of the film bag 3, and fix the opening end of the film bag 3 on the grouting pipe 4 with a hoop. The length of the film bag should be greater than the hole depth. Generally, the diameter is 10-40cm, and the length is 30-60cm. Put t...

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Abstract

The invention relates to an underground pipeline sedimentation repair high polymer membrane bag grouting method. The method comprises the following steps: (1) detecting a sunken pipe segment, and determining a grouting scheme; (2) drilling a membrane bag accommodating hole; (3) placing a membrane bag; (4) injecting a high polymer material into the membrane bag; (5) lifting the pipe segment; (6) filling a gapped region and reinforcing a soft soil layer. The high polymer material is a non-water-reaction bi-component high polymer material. The method has the advantages of rapidness, minimal invasiveness, light mass, high toughness, economical efficiency, durability and the like, lifting repair of an underground sedimentation pipe segment can be rapidly realized, and a novel advanced, efficient, economical and practical scheme is provided for underground pipeline sedimentation repair. The method is successfully applied to a plurality of underground pipeline lifting projects, and has great economic and social benefits and wide development and application prospects.

Description

technical field [0001] The invention belongs to underground pipeline repair technology, in particular to a polymer grouting method for non-excavation repair of pipeline settlement and uplift caused by unfavorable geology such as weak soil layers. Background technique [0002] Underground pipelines are concealed projects. Due to the complex and changeable geological conditions in my country, underground pipelines often encounter unfavorable geological environments such as weak soil layers during construction. If not handled properly, underground pipelines are prone to subsidence after completion, resulting in misalignment of pipe joints , leakage and other diseases. Under the action of groundwater pressure, the surrounding soil enters the pipeline through the staggered joints, causing silting of the underground pipeline, affecting its function and causing inconvenience to residents' lives. What's more serious is that the soil around the leakage point will continue to enter th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12E02D17/18
CPCE03F3/06F16L55/175
Inventor 王复明钟燕辉石明生方宏远王小亮
Owner SAFEKEY ENG TECHZHENGZHOU
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