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Construction method for balance originating of earth pressure balance shield machine

A construction method and earth pressure balance technology, which can be used in earth-moving drilling, mining equipment, tunnels, etc., and can solve problems such as the impact of reinforcement quality.

Active Publication Date: 2014-07-02
CHINA RAILWAY NO 5 ENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in subway shield construction, often limited by ground traffic, pipelines and structures, the length of the foundation reinforcement area is shorter than the length of the shield machine, or the reinforcement quality is affected. This is also one of the reasons why shield tunnels often appear in danger

Method used

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  • Construction method for balance originating of earth pressure balance shield machine
  • Construction method for balance originating of earth pressure balance shield machine
  • Construction method for balance originating of earth pressure balance shield machine

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Embodiment Construction

[0034] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0035] Such as figure 1 As shown, a construction method of earth pressure balance shield machine balance starting,

[0036] 1) Carry out the assembly and commissioning of the shield machine 1 and the installation of the starting reaction support system 3 according to the normal process;

[0037] 2) After the foundation reinforcement at the originating end meets the requirements for chiseling the portal, the inner enclosure structure of the portal is chiseled for the first time, and the inner enclosure structure 8 of the portal is chiseled, and the remaining outer enclosure structure 9;

[0038] 3) The hinged cord rubber temporary sealing device 7 and the steel sleeve box 6 are installed on the portal 5;

[0039] 4) Install the starting guide rail in the steel box 6 and the door 5, so that the shield machine 1 advances along the design track; hand grea...

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Abstract

Disclosed is a construction method for balance originating of an earth pressure balance shield machine. A steel cover box is mounted on a steel ring of a tunnel entrance before originating of the earth pressure balance shield machine. When a cutter of the shield machine enters the tunnel entrance before originating and tunneling, a shield is enveloped through the steel cover box to form an annular cavity, reverse water stop during originating can be realized through injecting grease and the like into the cavity, and active sealing pressure can be established. Water and soil pressure at the position of the tunnel entrance can be balanced through reverse water stop pressure of the steel cover box, and balance originating of the earth pressure balance shield machine can be realized.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method of an earth pressure balance shield machine starting from balance. [0002] Background technique [0003] The shield tunneling method is a construction method in which special machines for underground tunnels are used to build tunnels below the ground. With the rapid development of my country's urban rail transit projects, the shield method has been widely used, and the shield technology has also made great breakthroughs, especially the most widely used earth pressure balance shield. At the same time, the number of accidents in shield tunneling has also increased, especially in the initial stage of shield tunneling. Shield initiation refers to the construction process in which the shield machine starts to excavate from the shield working well. [0004] The initial construction stage of shield tunneling refers to the construction stage before the start of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06
Inventor 张细宝刘志刚陈世君江欢
Owner CHINA RAILWAY NO 5 ENG GRP
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