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Supporting system and construction method for transverse channel at ingate position

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

Active Publication Date: 2020-12-18
BEIJING URBAN CONSTR ROAD & BRIDGE GROUP
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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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  • Supporting system and construction method for transverse channel at ingate position
  • Supporting system and construction method for transverse channel at ingate position
  • Supporting system and construction method for transverse channel at ingate position

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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 , Figure 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 p...

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Abstract

The invention relates to the technical field of underground cavern construction, and discloses a supporting system and construction method for a transverse channel at an ingate position. The supporting system is used for supporting the transverse channel in a shallow-buried excavation construction process. The supporting system involves anti-extrusion supporting frames arranged between two adjacent transverse channel inverted arches, and deformation-limiting connecting blocks used for connecting pilot tunnel inverted arches and the transverse channel inverted arches, wherein the pilot tunnel inverted arches are fixedly connected with the side edges of the transverse channel inverted arches with the smallest distance with the pilot tunnel inverted arches through the deformation-limiting connecting blocks. According to the supporting system and construction method for the transverse channel at the ingate position, the anti-extrusion supporting frames are arranged in the transverse channel to resist transverse extrusion in a stratum, so that ground subsidence caused at the moment of excavating an ingate is avoided; meanwhile, the anti-extrusion supporting frames reinforce the rigidityof the transverse channel, so that the transverse channel is not prone to overall deformation, and therefore subsidence caused by stratum disturbance due to deformation of the transverse channel is avoided; and according to the supporting system and construction method for the transverse channel at the ingate position, the pilot tunnel inverted arches, the transverse channel inverted arches and transverse channel side walls are connected into a whole through the deformation-limiting connecting blocks, so that ground subsidence at the initial stage of excavation of a pilot tunnel at the lowerlayer is avoided.

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 Applications(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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