Construction method for excavating and supporting of arch of subway station

A construction method and technology for subway stations, which are used in underground chambers, earth-moving drilling, wellbore lining, etc.

Active Publication Date: 2021-08-27
GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to propose a construction method for arch excavation and support in subway sta

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  • Construction method for excavating and supporting of arch of subway station
  • Construction method for excavating and supporting of arch of subway station
  • Construction method for excavating and supporting of arch of subway station

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[0033] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments. And the features in the embodiments can be combined with each other.

[0034] In describing the present invention, it is to be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper surface", "lower surface", "front" , "Back", "Left", "Right", "Vertical", "Horizontal", "Top", "Bottom", "Inner", "Outer", "Forward", "Reverse", "Axial ", "radial", "circumferential" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying the referred device Or elements must ...

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Abstract

The invention discloses a construction method for excavating and supporting of an arch of a subway station. The construction method comprises the following steps of advanced geological forecast; construction of a large pipe shed at a horsehead arch; pilot tunnel construction; construction of middle piles and side piles; performing of advanced small guide pipe grouting on an arch part of a horsehead; breaking and removing of the horsehead arch; excavating and supporting of the arch; and construction of a plug wall. According to the construction method, the prediction procedure of advanced geological forecast is adopted, so that dangerous accidents are greatly reduced; according to the method, after the two side pilot tunnels communicate with the middle pilot tunnel, side pile construction is conducted in the two side pilot tunnels, middle column construction is conducted in the middle pilot tunnel, and a foundation is laid for stable arch construction; and according to the method, the processes of excavating and supporting of the arch are improved, the firmness of the arch of the subway station is greatly improved, and the dangers of underground excavation collapse, mud burst and water burst, underground pipeline damage, surrounding building settlement cracking and road settlement or collapse are avoided.

Description

technical field [0001] The invention relates to the technical field of subway engineering, in particular to a construction method for arch excavation and support of subway stations. Background technique [0002] According to the construction characteristics of buckle arches, geological and hydrological conditions, and the analysis of the surrounding environment, there are the following hazards during the excavation of buckle arches: underground excavation collapse, sudden mud gushing, damage to underground pipelines, settlement and cracking of surrounding buildings (structures), roads Subsidence or subsidence, etc. During the excavation process, if the advance support measures are not strong, the excavation method is improper, the initial support is not timely, the construction method is improperly selected, the ground settlement deformation and soil disturbance caused by the water loss and consolidation of the tunnel top may cause instability and collapse; Underground exca...

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Application Information

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IPC IPC(8): E21D9/00E21D11/00E21D11/10E21D11/18E21D11/38
CPCE21D9/00E21D11/00E21D11/10E21D11/105E21D11/18E21D11/38
Inventor 高晓刚王忠钊许光耀马利鹏兰平崔凯尹学鑫吴伟强刘辉王帅周焕武美容
Owner GUANGDONG CONSTR CO LTD OF CHINA RAILWAY NO 3 ENG GRP CO LTD
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