Grouting joint for double-shield TBM construction

A technology of grouting joints and double shields, which is used in wellbore lining, tunnel lining, underground chambers, etc., can solve the problems of increasing the labor intensity of construction personnel, poor sealing effect, and slurry leakage at the interface, so as to prevent slurry from returning. , good sealing effect, the effect of reducing labor intensity

Pending Publication Date: 2020-07-10
CHINA RAILWAY CONSTR HEAVY IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, using packing to seal the interface, on the one hand, it is inconvenient to operate, which increases the labor intensity of the construction workers; The phenomenon of uneven packing and poor sealing effect will cause slurry leakage at the interface

Method used

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  • Grouting joint for double-shield TBM construction
  • Grouting joint for double-shield TBM construction

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The core of the present invention is to provide a grouting joint for double-shield TBM construction, which has a simple sealing method, is easy to operate, reduces the labor intensity of construction personnel, and has good sealing uniformity and good sealing effect.

[0031] Please refer to Figure 1-Figure 2 , figure 1 It is a structural schematic diagram of a specific embodiment of the grouting joint for double-shield TBM construction provided by th...

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Abstract

The invention discloses a grouting joint for double-shield TBM construction. The joint comprises a grouting pipe, an elastic element and a driving part, wherein the grouting pipe is used for being inserted into a grouting hole of a segment, the elastic element is arranged on the peripheral portion of the grouting pipe in a sleeving mode, one end of the grouting pipe is provided with a limiting part for axially limiting the elastic element, the driving part is arranged at the other end of the grouting pipe and is used for applying axial pressure on the elastic element, and after the elastic element is pressed and deformed, a gap between the grouting pipe and the grouting hole is sealed. According to the grouting joint for double-shield TBM construction, the axial pressure is applied to theelastic element through the driving part, and the elastic element is axially limited in combination with the limiting part, so that after the elastic element is pressed and deformed, the gap between the grouting pipe and the grouting hole is sealed; and the sealing mode is simple, the operation is simple, the axial pressure is applied to the elastic element through the driving part, the gap between the grouting pipe and the grouting hole is sealed after the elastic element is integrally deformed, the sealing uniformity is good, the sealing effect is good, and the adverse phenomena such as slurry return and slurry leakage can be prevented.

Description

technical field [0001] The invention relates to the technical field of double-shield TBM tunnel construction equipment, and more specifically relates to a grouting joint for double-shield TBM construction. Background technique [0002] During the double-shield TBM construction process, mud and pea gravel need to be filled between the segment and the rock wall to fill the gap between the segment and the rock wall. grouting holes. [0003] In the prior art, the grouting joint communicated with the grouting pipeline is usually inserted into the grouting hole for grouting. In order to avoid the leakage of mud from the gap between the grouting joint and the grouting hole, pollute the construction area, cause insufficient grouting pressure and waste of cement slurry, etc., when grouting, it is necessary to separately check the interface between the grouting joint and the grouting hole Packing seal. [0004] However, using packing to seal the interface, on the one hand, it is in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10
CPCE21D11/105
Inventor 易格刘伟肖前龙周赛群朱颖智曾定荣文中保刘恺
Owner CHINA RAILWAY CONSTR HEAVY IND
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