Shield construction method for subway underneath passing high-speed rail line

A construction method and line shield technology, which is applied in the field of shield construction of high-speed railway lines under the subway, can solve problems such as safety risks, groundwater disturbance, settlement deformation, etc., and achieve the effects of ensuring safety, easy operation, and reducing settlement

Pending Publication Date: 2022-04-05
CHINA RAILWAY NO 5 ENG GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the shield machine tunnels under the high-speed rail line, it will cause soil layer loss and groundwater disturbance, resulting in settlement deformation and increased gravity, which in turn will cause the track of the high-speed rail line to settle and pose a safety risk
At present, there is no construction method that can well control the track settlement for the shield construction of the subway under the high-speed rail line

Method used

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  • Shield construction method for subway underneath passing high-speed rail line

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with specific examples.

[0020] Such as figure 1 As shown, the shield construction method of the subway under the high-speed railway line in this embodiment includes the following steps:

[0021] (S1) After the shield machine is used to excavate the rock and soil layer to reach the first preset distance from the high-speed rail line, while the shield machine continues to excavate the tunnel and install segments in the tunnel to form a ring lining, simultaneously Grouting between the completed annular lining and the rock-soil layer;

[0022] (S2) After the shield machine excavates through the high-speed railway line and exceeds the second preset distance of the high-speed railway line, the conventional shield excavation method is used to continue excavation.

[0023] In the shield tunneling method for passing through the high-speed rail line under the subway, the shield machine is between t...

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Abstract

The invention discloses a shield construction method for a subway underneath passing high-speed rail line, which comprises the following steps: after a shield tunneling machine is adopted to perform tunneling in a rock-soil layer to reach a first preset distance away from the high-speed rail line, the shield tunneling machine continues to perform tunneling to excavate a tunnel, and segments are mounted in the tunnel to form an annular lining; grouting is synchronously conducted between the constructed annular lining and the rock-soil layer; and after the shield tunneling machine conducts tunneling through the high-speed rail line and exceeds the second preset distance of the high-speed rail line, a conventional method is adopted for continuing to conduct tunneling. The method has the advantages of capability of reducing settlement during construction and after construction, high safety, simplicity and convenience in construction, easiness in operation, popularization and implementation and the like.

Description

technical field [0001] The invention relates to the technical field of shield tunneling construction, in particular to a shield tunneling construction method for underground high-speed railway lines. Background technique [0002] In subway shield construction, it is often necessary to cross high-speed rail lines. When the shield machine tunnels under the high-speed rail line, it will cause soil loss and groundwater disturbance, resulting in settlement deformation and increased gravity, which in turn will cause the track of the high-speed rail line to settle and pose a safety risk. At present, there is no construction method that can well control the track settlement for the shield construction of the subway under the high-speed rail line. Contents of the invention [0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing technology, and provide a subway underpass high-speed rail line shield that can reduce the set...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/06E21D9/08E21D11/08E21D11/10
Inventor 周浩李哲费瑞振李博李思石琨罗武装颜桢炜欧可黄光
Owner CHINA RAILWAY NO 5 ENG GRP
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