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Method for constructing subway tunnel with complicated geology and without shield launching site

A technology for complex geology and tunnel construction, applied in tunnels, tunnel linings, underground chambers, etc., can solve the problems of not being able to provide the starting site for the shield on time, accelerate tool wear, and reduce the speed of excavation, so as to avoid opening and changing Knives, reducing the wear of the cutterhead, and improving the progress of the project

Pending Publication Date: 2018-02-23
CHINA RAILWAY 12TH BUREAU GRP +1
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Problems solved by technology

[0003] In order to solve the problem that the shield tunnel construction in the subway section contains complex geology, the tool wear will be accelerated and the tunneling speed will be reduced, and at the same time, the starting site cannot be provided for the shield tunnel on time due to land acquisition, demolition or traffic reversal. A construction method for subway tunnels with complex geology and no shield starting site

Method used

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  • Method for constructing subway tunnel with complicated geology and without shield launching site
  • Method for constructing subway tunnel with complicated geology and without shield launching site
  • Method for constructing subway tunnel with complicated geology and without shield launching site

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Embodiment Construction

[0020] refer to Figure 1 to Figure 5 Further elaborating the present invention, a subway tunnel construction method with complex geology and no shield starting site, a shield shaft 1 is set in the preset tunnel section, and shield tunneling is constructed at both ends of the shield shaft 1 using the mining method Empty thrust underground excavation section 2 and synchronous construction underground excavation section 3 and the initial support 7 are implemented in time, the air thrust underground excavation section 2 of the shield machine faces the shield advancing direction H, and the synchronous construction underground excavation section 3 faces the opposite direction of shield tunneling, The shield tunneling section 2 is connected with the shield tunneling section 4, and the main body 11 of the shield machine and the supporting equipment that are lowered and assembled through the shield shaft 1 arrive at the shield tunneling section 2 in a separate way. After the shield tu...

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Abstract

The invention relates to the technical field of subway construction, in particular to a method for constructing subway tunnel with complicated geology and without shield launching site, which solves the problems of complicated geology in the subway section and failure to provide shield launching site on time in the exiting subway construction process. The method comprises the following steps of arranging a shield inclined shaft in a preset tunnel section; respectively constructing a shield empty-push hidden excavation section and a synchronous-construction hidden excavation section at both ends of the shield inclined shaft by a mine method, and timely applying primary support; connecting the shield empty-push hidden excavation section to a shield tunneling section; enabling a shield body and subsequent auxiliary equipment which are lowered and assembled by the shield inclined shaft to respectively adopt the splitting launching type to arrive at the shield pushing section via the shieldempty-push hidden excavation section, and performing shield tunneling launching; excavating the synchronous-construction hidden excavation section to a subway station by the mine method. The subway tunnel construction method has the advantages that compared with single shield construction method, the advantages of various working methods are fully played; the abrasion of a tool disc is reduced, the condition of frequent bin opening for tool replacing is avoided, the safety risk is decreased, the construction progress is quick, and the like.

Description

technical field [0001] The invention relates to the technical field of subway construction, in particular to a construction method for subway tunnels with complex geology and no starting site for shield tunneling. Background technique [0002] With the acceleration of urbanization in my country, urban subway construction has entered a golden period of development. The existing subway construction scheme usually uses the subway station construction first, and then the shield tunneling machine starts from the subway station to carry out the shield tunneling construction, and the shield slag is discharged and the shield piece is transported by the subway station; or after the subway station is opened , In addition, select a shield shaft in the subway section, and use the subway station to cooperate with the shaft for the transportation of shield slag and shield pieces. Because urban subways are usually designed as shallow buried tunnels, and there are many structures above the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D11/00E21D11/10
CPCE21D9/06E21D9/0607E21D11/003E21D11/105E21D11/107Y02E10/20
Inventor 李艳辉李建军吴世红黄四华曹志勇赵香萍李晓
Owner CHINA RAILWAY 12TH BUREAU GRP
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