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Rock stratum shield tunnel end reinforcing structure and reinforcing method

A technology for shield tunneling and rock formation, which is used in tunnels, tunnel linings, and earth-moving drilling and mining, etc., can solve the problems of water-stop reinforcement at the end, and achieve the effect of satisfying strength, good safety and light weight.

Active Publication Date: 2017-02-22
HAINAN UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The purpose of the present invention is to solve the problem of water sealing and reinforcement at the end of the shield tunnel in the rock formation, and to provide a reinforcement structure and a reinforcement method for the end of the shield tunnel in the rock formation

Method used

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  • Rock stratum shield tunnel end reinforcing structure and reinforcing method
  • Rock stratum shield tunnel end reinforcing structure and reinforcing method
  • Rock stratum shield tunnel end reinforcing structure and reinforcing method

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Embodiment Construction

[0064] see figure 1 , figure 2 , image 3 with Figure 4 Shown:

[0065] In the rock formation shield tunnel end reinforcement structure provided by the present invention, a row of grouting anchor rods 1 is arranged at the front end of the enclosure structure 6 , and grouting is performed through the grouting anchor rods 1 .

[0066] The setting interval of the grouting anchor rods 1 is 0.5m, and the length of the grouting anchor rods 1 is: from the ground to the position 3m below the arch bottom of the shield tunnel 2 .

[0067] The grouting anchor 1 is a bamboo reinforcement anchor, and each grouting anchor 1 is fixedly connected with four pieces of bamboo reinforcement 4 through a connector 3, and the inner cavity of the grouting anchor 1 is provided with a grouting pipe 5. The grouting pipe 5 is used for grouting, and the diameter of the grouting pipe 5 is 108mm or 127mm.

[0068] The method for reinforcing the rock formation shield tunnel end provided by the present...

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Abstract

The invention discloses a rock stratum shield tunnel end reinforcing structure and a rock stratum shield tunnel end reinforcing method. According to the reinforcing structure, a row of grouting anchor rods are arranged at the front end of an enclosing structure; grouting is performed through the grouting anchor rods. The reinforcing method comprises the following steps: firstly, formulating a construction process flow; secondly, performing specific construction processes: firstly, performing drilling construction; secondly, performing construction of bamboo bar grouting anchor rods; thirdly, performing the construction of breaking a slot wall. The rock stratum shield tunnel end reinforcing structure and the rock stratum shield tunnel end reinforcing method have the beneficial effects that the rock stratum shield tunnel end reinforcing structure can be dug and removed; the whole sections of rod bodies are anchored; anchoring and grouting are combined. The strength is high; the weight is light; the safety is high; the advantages of preventing static electricity, resisting to low temperature and the like meet the requirements of safe production of underground engineering. The economical efficiency is that the construction cost can be greatly reduced.

Description

technical field [0001] The invention relates to a reinforcement structure and a reinforcement method for the end of a shield tunnel, in particular to a reinforcement structure and a reinforcement method for the end of a shield tunnel in a rock formation. Background technique [0002] At present, during the excavation and construction of shield-tunnel tunneling, it is necessary to reinforce the ground at the end of the shield-tunnel tunnel. Whether the reinforcement measures for the entrance and exit holes of the shield machine are appropriate or not will directly affect whether the shield machine can start and arrive safely. Therefore, a reasonable reinforcement method should be selected according to different stratum conditions and construction conditions. The main purpose of stratum reinforcement at the end of the shield tunnel is as follows: [0003] (1) Improve the strength of the soil at the end of the shield tunnel, control ground subsidence, and prevent collapse. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D20/02E21D20/00E21D21/00E21D11/38
CPCE21D11/38E21D20/003E21D20/021E21D21/0006
Inventor 胡俊卫宏刘勇李玉萍姚凯佳琳
Owner HAINAN UNIVERSITY
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