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Sleeve valve pipe grouting rapid water stopping method in water-rich tunnel

A sleeve valve pipe grouting and water-rich tunnel technology, which is applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve problems such as collapse or even collapse, tunnel face instability, and slow water stop speed, and achieve rapid construction , Improve the working condition of the face

Active Publication Date: 2022-02-25
CHINA RAILWAY 13TH BUREAU GRP 6TH ENG COMPANY +1
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AI Technical Summary

Problems solved by technology

[0002] In the construction of tunnels in shallow buried, soft rock and seepage areas, there are problems such as water seepage in the surrounding rock of the tunnel face, vault falling blocks, instability of the tunnel face, collapse or even collapse, and the traditional tunnel water-stopping method has water-stopping problems. Slow speed and poor water stop effect

Method used

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Embodiment Construction

[0029] A rapid water stop method for sleeve valve pipe grouting in a water-rich tunnel, characterized in that it includes the following steps:

[0030] Step 1: Pre-reinforcement work before construction

[0031] When the water gushing in the unconstructed section is large, the arch part of the tunnel face should be pre-reinforced by local grouting in advance to prevent water and mud inrush, reduce the pumping pressure of the working face, and ensure the normal construction;

[0032] For the strand water after excavation and the centralized water outlet point, in the water outlet stable period or attenuation period, the local top water grouting grouting method is used to block the water, and the water outlet point is the center, and holes are arranged in a certain range around it. First the outer ring, then the inner ring, grouting layer by layer to shrink, and finally concentrated grouting to the water outlet point to block water;

[0033] Step 2: Close the palm face

[0034...

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Abstract

A sleeve valve pipe grouting rapid water stopping method in a water-rich tunnel comprises the steps of pre-reinforcement operation before construction, tunnel face closing, measuring and lofting, drilling operation, casing material pouring, sleeve valve pipe installing, grout stopping and pipe fixing, grouting liquid preparing, grouting and the like. Through reasonable grouting liquid preparing and standard construction parameters, rapid water stopping of a tunnel face can be achieved, the working condition of a tunnel face is effectively improved, and safe, efficient and rapid construction of a tunnel is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tunnel water stop, and in particular relates to a rapid water stop method for grouting sleeve valve pipes in water-rich tunnels. Background technique [0002] In the construction of tunnels in shallow buried, soft rock and seepage areas, there are problems such as water seepage in the surrounding rock of the tunnel face, vault falling blocks, instability of the tunnel face, collapse or even collapse, and the traditional tunnel water-stopping method has water-stopping problems. The problem of slow speed and poor water stop effect. Therefore, in this case, the rigid sleeve valve pipe retreating grouting technology is used for rapid water blocking and consolidation, which can effectively improve the working conditions of the tunnel face and ensure safe, efficient and rapid construction of the tunnel. Contents of the invention [0003] The purpose of the present invention is to provide a rapid water-stoppi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/38E21D11/10C04B28/02C04B28/26C04B111/70
CPCE21D11/38E21D11/105C04B28/26C04B28/02C04B2111/00724C04B2111/70C04B7/00C04B14/104Y02E10/20
Inventor 高雪冬
Owner CHINA RAILWAY 13TH BUREAU GRP 6TH ENG COMPANY
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