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Shield in-tunnel construction method

A construction method and hole-entry technology, applied in earthwork drilling, wellbore lining, tunnel lining, etc., can solve problems such as seepage channels, upwelling of pressurized water, endangering the safety of the ground surface and surrounding environment, etc., to ensure construction safety and guarantee The effect of construction quality

Inactive Publication Date: 2018-04-27
SHANGHAI MECHANIZED CONSTR GRP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the shield enters the hole in the confined water layer, the confined water will still surge up, and leakage channels will easily form behind the shield, at the joint between the reinforcement body and the ground wall, endangering the safety of the ground surface and surrounding environment

Method used

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Embodiment Construction

[0037] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that all the drawings of the present invention are in simplified form and use inaccurate scales, and are only used to facilitate and clearly assist the purpose of illustrating the embodiments of the present invention.

[0038] The present invention provides a shield tunneling construction method, comprising the following steps:

[0039] Step 1: Reinforce the entrance door with cement reinforcement method, as follows:

[0040] Such as figure 1 As shown, the cement-based reinforcement method mainly adopts triaxial mixing piles and jet grouting method to form the reinforcement area 1 of the triaxial mixing piles and the reinforcement area 2 of the jet grouting piles. Preferably, the reinforcement length of the cement sy...

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Abstract

The invention discloses a shield in-tunnel construction method. The method includes the following steps that a cement system reinforcement method is adopted for reinforcing a tunnel portal; a horizontal freezing reinforcement method is adopted for further reinforcing the tunnel portal; a steel cover box is assembled in the tunnel portal; the steel cover box is used for receiving a shield tunnelingmachine; the shield tunneling machine enters a tunnel from the tunnel portal for construction; after the shield tunneling machine completes construction, grouting is conducted on the tunnel portal soas to seal the tunnel portal. According to the shield in-tunnel construction method, the situation that confined water upwells and water is leaked from the tunnel portal when a shield enters the tunnel in confined water is effectively prevented, and the construction safety and the construction quality are ensured.

Description

technical field [0001] The invention relates to the field of shield tunneling construction, in particular to a shield tunneling construction method. Background technique [0002] In the shield tunneling construction process of underground interval tunnels, shield tunneling, as the last link of interval tunnel penetration, is of great significance to the entire project. In the prior art, the entrance of the shield tunnel mainly adopts three-axis stirring piles and rotary jetting piles for reinforcement and water-stopping. However, when the shield enters the hole in the confined water layer, the confined water will still surge up, and leakage channels will easily form behind the shield, at the joint between the reinforcement body and the ground wall, endangering the safety of the ground surface and surrounding environment. Contents of the invention [0003] In order to solve the above technical problems, the present invention provides a shield tunneling construction method,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/10E21D9/00E21D9/06E21D9/08
CPCE21D9/001E21D9/0607E21D9/08E21D11/105
Inventor 范晓翔魏晓峰毛文祺俞嫒妍郑祥杰李冀清
Owner SHANGHAI MECHANIZED CONSTR GRP
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