The Construction Method of Excavating the Station Structure by Tunnel First and Then the Station Pipe-curtain Pile Method

A construction method and technology of hole and pile method, which are applied in tunnels, earthwork drilling, tunnel lining and other directions, can solve the problems of long construction period, affecting the amount of earthwork excavation, and affecting the goal of connecting the whole line, and achieve economical cost savings and strong economy. The effect of benefit and social value
CN111677520BActive Publication Date: 2022-03-01HAINAN UNIV
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
HAINAN UNIV
Publication Date
2022-03-01

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Abstract

The invention discloses a construction method for excavating a station structure by first tunneling and then station pipe curtain hole pile method. During construction, four pilot tunnels are respectively arranged on the upper and lower floors, wherein there is a leading pilot tunnel in the upper layer pilot tunnel, and the preceding pilot tunnel is used to excavate the station structure. As the working space for the installation of pipe curtains, there is no pipe curtain support above the first pilot tunnel and the four lower pilot tunnels, and the primary support is provided with a vaulted straight wall structure. The pilot tunnels are used as side piles and central steel pipe columns. Space, after the installation of the pipe curtain is completed, the remaining three upper pilot holes on the upper floor will be excavated with a flat roof and straight wall structure. It is also suitable for the excavation of shallow and deep buried stations, which ensures that the environmental facilities are almost unaffected, and thus saves economic costs. It has strong economic benefits and social value, and can be widely used in similar projects.
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Description

technical field

[0001] The invention relates to the field of tunnel construction, in particular to a construction method for excavating a station structure by tunneling first and then station pipe curtain hole pile method. Background technique

[0002] In the construction of urban subway projects, due to the difficulty and slowness of the demolition work in the central area of ​​the city, the demolition and relocation cannot be completed on time. As a result, the construction of the subway station section cannot be started according to the planned construction period, or even seriously lags behind, which affects the realization of the goal of running through the entire line. It is necessary to use The tunnel will be constructed first and then the station will be constructed. Most of the existing construction methods are the tunnel first and then the station combined with the open-cut method or the mine method, but the open-cut method will greatly affect the environmental fac...

Claims

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