A cross-channel support system at the horse head gate position and its construction method

A construction method and cross-channel technology, which is applied in tunnels, earthwork drilling, tunnel lining, etc., can solve problems such as ground subsidence and residential house cracking, so as to avoid ground subsidence, avoid deformation and disturbance of stratum to cause subsidence, and prevent overall deformation Effect

Active Publication Date: 2021-01-29
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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  • Claims
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AI Technical Summary

Problems solved by technology

The construction process of underground caverns with large cross-sections such as air ducts near subway stations often causes ground subsidence, causing cracks in residential buildings

Method used

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  • A cross-channel support system at the horse head gate position and its construction method
  • A cross-channel support system at the horse head gate position and its construction method
  • A cross-channel support system at the horse head gate position and its construction method

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Embodiment Construction

[0043] A cross passage support system at the horse head gate position, used for the support of the cross passage in the construction process of shallow buried underground excavation, such as figure 1 , figure 2 , Image 6As shown, the underground chamber to be excavated contains multi-layer pilot tunnel inverts 21, and the cross-passage support system includes multiple layers of cross-passage inverts 12 arranged between two cross-passage side walls 11, and two adjacent cross-passage inverts 12 An anti-extrusion support frame 5 is provided between the transverse channel inverts 12 for supporting the upper transverse channel inverts 12 and resisting the extrusion of the lateral channel side walls 11. The anti-extrusion support frames 5 are respectively attached to the upper and lower transverse channel inverts Arches 12 and two transverse channel side walls 11 are provided.

[0044] When construction is carried out by shallow burial and underground excavation, construction pe...

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PUM

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Abstract

The invention relates to the technical field of underground cavern construction, and discloses a cross passage support system at the horse head gate position and a construction method thereof. The anti-extrusion support frame between the two transverse channel inverts, and the deformation-limiting connecting block used to connect the pilot tunnel invert and the transverse channel invert, the pilot tunnel invert and the side edge of the transverse channel invert with the smallest distance pass through The deformation-limited connection block is fixedly connected. In the present invention, the anti-extrusion support frame is set in the transverse channel to resist the lateral extrusion in the formation, thereby avoiding ground subsidence at the moment of opening the horse head door; at the same time, the anti-extrusion support frame has improved the rigidity of the transverse channel. Reinforcement, so that it is not easy to deform as a whole, thereby avoiding the deformation of the transverse passage to disturb the formation and cause settlement; in the present invention, the inverted arch of the guide tunnel, the inverted arch of the transverse passage, and the side wall of the transverse passage are connected as a whole through the deformation-limiting connecting block, so that Avoid ground subsidence at the initial stage of excavation of the lower pilot tunnel.

Description

technical field [0001] The invention relates to the technical field of underground cavern construction, in particular to a support system for a cross passage at the position of a horse head gate and a construction method thereof. Background technique [0002] Underground excavation construction is the most important construction method for underground construction in cities. Regular small-diameter underground caverns are mainly constructed by pipe jacking or shield tunneling methods, while large-diameter / irregular underground caverns are still constructed by the shallow buried underground excavation method developed from the mining method, that is, digging while digging Pouring the lining. The usual practice is to dig a shaft first to reach the construction ground. Then excavate the horizontal channel perpendicular to the vertical shaft, assemble the excavation machinery in the horizontal channel, and then carry out the formal excavation work perpendicular to the horizonta...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D11/36E21D11/14E21D11/10E21D9/00
CPCE21D9/001E21D11/10E21D11/14E21D11/36
Inventor 孙玉国王永海王建成韩红雨冯帅王莹荀学思刘璐冯帅帅
Owner BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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