Waterproof structure for pipe-jacking method tunnel union joint

A technology of waterproof structure and tunnel pipe, which is applied in the direction of non-detachable pipe connection, pipe/pipe joint/fitting, pipe laying and maintenance, etc. It can solve the problems of self-heavy pipe joints, tunnel water leakage, uneven upper and lower gaps at pipe joint joints, etc. question

Active Publication Date: 2012-10-17
SHANGHAI MUNICIPAL ELECTRIC POWER CO +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Compared with the elastic rubber gasket of the shield tunnel, the water pressure resistance of the rubber water stop ring installed on the pipe joint joint is relatively low. The possibility of uniformity increases, which is unfavorable to the waterproofing of pipe joints, especially in the case of curved construction, which is likely to cause seal damage and tunnel leakage.

Method used

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  • Waterproof structure for pipe-jacking method tunnel union joint
  • Waterproof structure for pipe-jacking method tunnel union joint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Such as Figure 1~2 As shown in the figure, a waterproof structure for the connection of pipe jacking tunnel pipe joints, including the left and right pipes abutted together, the joint is in the shape of steps, the steps are provided with a cover plate 1, and two anchors are arranged in the left and right pipes. One of them is set at the bottom of the jacking pipe, which is an inverted L-shaped anchor bar 2, and the other is set at the top of the jacking tube, which is a hook-shaped anchor bar 3 intersecting with the L-shaped anchor bar 2. The left jacking tube and the right jacking tube There is a plywood 4 between them, the bottom of the plywood 4 is filled with a high modulus polyurethane sealant 5, the top of the left jacking pipe is filled with a low modulus polyurethane sealant 6 near the seam, and the connecting end of the cover plate 1 and the left jacking pipe is provided with a single Component water-expandable polyurethane sealant 7, the right top pipe is con...

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PUM

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Abstract

The invention relates to a waterproof structure for pipe-jacking method tunnel union joint. The waterproof structure comprises push pipes, sealing gum and anchor bars, wherein a pipe joint, which is connected with the push pipes, is provided with the anchor bars, a docking place of the push pipes is provided with a veneer, the sealing glue is arranged on the lower end of the veneer, and the sealing gum is arranged on the pipe mouths of the push pipes on the both sides of the upper end of the veneer. In comparison with the prior art, the waterproof structure, provided by the invention, has the advantages of good elasticity, low water permeability rate and the like.

Description

technical field [0001] The invention relates to a waterproof gasket for laying cable ducts, in particular to a waterproof structure for connecting pipe joints in tunnels by the pipe jacking method. Background technique [0002] Since various municipal pipelines are criss-crossing underground and densely stacked, and there are more and more municipal buildings on the ground, the excavation construction will damage the road structure and the environment, and at the same time bring a lot of inconvenience to people's life and work, and the construction cost is increasing. higher. In order to solve the contradiction between existing municipal facilities and construction, a new construction technology - trenchless technology - was born. The most common technique used in non-excavation technology for long-distance pipeline laying is the pipe jacking method. [0003] The joints of the pipe jacking joints have a single form, and the number of joints in the overall waterproof area i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L13/10F16L1/036
Inventor 朱玉林杨文威陆小龙何真珍
Owner SHANGHAI MUNICIPAL ELECTRIC POWER CO
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