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Underground excavation construction method for constructing subway station

A construction method and technology for subway stations, applied in underground chambers, earthwork drilling, wellbore lining, etc., can solve problems such as large structural sections and impossibility of application, and achieve the effect of maintaining structural stability and realizing self-stabilization

Active Publication Date: 2020-06-30
SHANGHAI MECHANIZED CONSTR GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The purpose of the present invention is to provide a kind of submerged construction method for constructing subway stations, and solve the problem that the submerged excavation method construction in the prior art cannot be applied when the covering soil is relatively shallow and the structural section is large when constructing a subway station.

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  • Underground excavation construction method for constructing subway station
  • Underground excavation construction method for constructing subway station
  • Underground excavation construction method for constructing subway station

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Embodiment Construction

[0029] The core idea of ​​the present invention is to use the matching method of freezing pipe and pipe shed to divide the entire large-section excavation surface into sections, so that each section becomes a small frozen underground excavation. After the freezing pipe is frozen by salt water, a frozen wall is formed to ensure Stability, the MJS (all-round high-pressure jet method) method is mainly used to stabilize the soil on both sides and the lower part of the excavated large section, and can also be used for soil improvement in the excavation section.

[0030] The specific implementation manner of the present invention will be described in more detail below with reference to schematic diagrams. The advantages and features of the present invention will be more apparent from the following description. It should be noted that all the drawings are in a very simplified form and use imprecise scales, and are only used to facilitate and clearly assist the purpose of illustrating...

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Abstract

The invention discloses an underground excavation construction method for constructing a subway station. The underground excavation construction method is characterized by including the following steps of S1, performing construction on the upper side of a soil body of a to-be-excavated area through a pipe roofing method to form an upper pipe roofing support; S2, performing primary metro jet systemconstruction on the two sides and the bottom of the soil body of the to-be-excavated area for pile driving and hole distributing; S3, dividing the to-be-excavated area into a plurality of excavationsections, and performing construction to drive pipe roofing pipes and freezing pipes into soil bodies between every two adjacent excavation sections and soil bodies on the two sides and the bottom ofthe to-be-excavated area through a pipe roofing method and a freezing method to form a freezing wall; and S4, performing excavating and supporting on each excavation section. By means of the construction method, the problem that the underground excavation construction cannot be applied under the conditions of shallow soil coverage and large structural section when the subway station is constructedin the prior art can be solved.

Description

technical field [0001] The invention relates to the field of subway station engineering construction, in particular to an underground excavation construction method for constructing a subway station. Background technique [0002] The selection of the construction method of the subway station should not only meet the use function of the subway project itself, but also meet the requirements of rational development and utilization of the effective space on the ground and underground, and consider the adverse effects of the construction on the surrounding environment. Whether the choice of the construction method is reasonable or not has a great impact on the buried depth of the line, the structure type of the station, the construction period and the cost of civil engineering, etc., and directly affects the social, economic and environmental benefits of the entire line. [0003] The construction method of existing subway station generally has three kinds: 1, open cut method, ref...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D11/00E21D11/14E21D11/10
CPCE21D9/00E21D11/003E21D11/10E21D11/14E21D9/03
Inventor 周丹伟潘玉云姚立顺张龙张智玮
Owner SHANGHAI MECHANIZED CONSTR GRP
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