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Construction method for going through subway station by double circular shielding

A technology of double-circle shield tunneling and construction method, which is applied in the direction of earth square drilling, mining equipment, tunnels, etc., and can solve the problem of undiscovered double-circle shield tunneling through subway station construction method technical documents, long time required for dismantling and debugging, and double-circle shield tunneling. The shield machine system is huge and other problems, so as to speed up the project construction speed, save manpower, and reduce the project cost

Inactive Publication Date: 2005-05-11
SHANGHAI TUNNEL ENGINEERING CO. LTD.
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

However, there are some shortcomings and defects as follows: the dismantling and installation of the double-circle shield machine requires a professional construction team to complete, and the project cost is greatly increased; the double-circle shield machine system is huge, and it takes a long time to dismantle, install, and debug, which has a great impact on the construction period; ③The hoisting of the shield machine requires large-scale hoisting equipment, and the construction safety factor is low
[0003] After searching the existing technical literature, no report on the same or similar construction method of the double-circle shield crossing the subway station has been found so far.

Method used

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Examples

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Embodiment Construction

[0018] Taking a double-circle shield tunnel project as an example, a double-circle shield machine needs to complete the construction of two interval tunnels continuously, and the length of the station between the two interval tunnels is 180 meters. After a section tunnel, the tunnel construction of the next section must be carried out after crossing the station.

[0019] During the entire double-circle shield passing construction process, the mobile shield base is mainly used as the main tool, and the principle of jacking is adopted to continuously place supports as jacks to move the shield machine forward.

[0020] During the double-circle shield tunneling construction process, the main control items and contents are as follows:

[0021] 1. The stability of the working surface of the jack

[0022] In the test jacking construction where the body of the double-circle shield machine and the frame pass through the station at the same time, in order to ensure the synchronous and ...

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Abstract

A construction method for passing the dual-circle shield machine the subway station includes such steps as earlier stage preparation, installing movable base, putting the dual-circle shield machine on the base, temporary fixing, installing two 200-ton jacks behind said dual-circle shield machine, welding the back-base to the preburied bottom plate of station, pushing the dual-circle shield machine along with its base forward by 3 m, restoring the jacks, arranging a supporter between jack and back-base, and repeating said steps.

Description

technical field [0001] The invention relates to a construction method of a double-circle shield, in particular to a construction method for a double-circle shield to pass through a subway station, and belongs to the field of construction engineering. Background technique [0002] Since the double-circle shield construction method came out in Hiroshima, Japan in 1989, with the rapid development of urban municipal construction and rail transit, shield construction technology has been widely used, because it effectively saves underground space resources, reduces the impact on the surrounding environment, and reduces Unique advantages such as project cost have also been widely used in subway, municipal, energy and other engineering constructions. When using the same double-circle shield machine for tunneling in two or more consecutive intervals, it is bound to face double-circle shield tunneling. After completing the first tunnel section, the shield machine will be transported f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00
Inventor 顾春华吴惠明陶育王旋东陈年红
Owner SHANGHAI TUNNEL ENGINEERING CO. LTD.
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