A kind of underground excavation construction method for constructing subway station

A construction method and technology for subway stations, which are used in earth-moving drilling, underground chambers, and shaft equipment, etc., can solve problems such as large structural sections and inapplicability.

Active Publication Date: 2021-09-17
SHANGHAI MECHANIZED CONSTR GRP
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  • 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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  • A kind of underground excavation construction method for constructing subway station
  • A kind of underground excavation construction method for constructing subway station
  • A kind of 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 a construction method for underground excavation of a subway station, which is characterized in that it comprises the following steps: S1: using the pipe shed method to construct above the soil in the area to be excavated to form the upper pipe shed support; S2: The two sides and the bottom of the soil body in the area to be excavated are carried out for the first time in all-round high-pressure spraying method construction to carry out piling and hole layout; S3: divide the area to be excavated into a plurality of excavation intervals, and use the pipe shed method and freezing The method carries out construction to the soil between the adjacent described excavation intervals, and the soil on both sides and bottom of the area to be excavated into pipe shed pipes and frozen pipes to form frozen walls; S4: for each Excavation and support are carried out in the excavation section; this construction method can solve the problem that the prior art underground excavation method cannot be applied when the covering soil is relatively shallow and the structural section is large when constructing the subway station.

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 Patents(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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