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Annular yielding supporting structure for yielding supporting of tunnel and yielding method

A support structure and hoop technology, applied in tunnels, tunnel linings, earthwork drilling and mining, etc., can solve the problems that the final deformation of the surrounding rock cannot be immediately limited, and achieve the effect of simple manufacture and convenient assembly of the device

Pending Publication Date: 2022-07-22
XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This device solves the problem that continuous yielding deformation in tunnel yielding support cannot limit the final deformation of surrounding rock immediately by limiting the yielding distance

Method used

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  • Annular yielding supporting structure for yielding supporting of tunnel and yielding method
  • Annular yielding supporting structure for yielding supporting of tunnel and yielding method
  • Annular yielding supporting structure for yielding supporting of tunnel and yielding method

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Embodiment Construction

[0030] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. The exemplary embodiments and descriptions of the present invention are used to explain the present invention, but are not intended to limit the present invention.

[0031] see figure 1 , the present invention provides a circumferential pressure yielding support structure for tunnel yielding support, comprising a plurality of adjacent arch units 101 connected end to end through the circumferential yielding pressure node device 100 to form a circumferential pressure yielding structure, The hoop yielding structure is fixed in the tunnel by means of fixing anchors 102 .

[0032] see figure 2 , the annular pressure drop point device 100 includes a wedge-shaped plug 1 and a socket 2; the wedge-shaped plug 1 is inserted into the socket 2, and the outer ends of the two are connected to the arch unit 101 respectively.

[0033] see image 3 , Figure...

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Abstract

The circumferential yielding supporting structure comprises a plurality of arch frame units which are arranged in the circumferential direction, and the adjacent arch frame units are connected end to end through circumferential yielding node devices and jointly arranged in the center of a tunnel. The circumferential yielding node device comprises a wedge-shaped plug and a socket which are connected with the arch frame unit; the wedge-shaped plug is inserted into the socket, the socket plate of the socket generates supporting force in the direction of the weakening groove through relative axial displacement, and radial shrinkage generated by deformation of tunnel surrounding rock is interfered. The self-supporting capacity of the surrounding rocks is exerted, the tunnel surrounding rocks enter the strong supporting stage in time, and further deformation of the tunnel surrounding rocks is prevented; by limiting the yielding distance, the problem that the final deformation of the surrounding rock cannot be immediately limited by continuous yielding deformation in the yielding support of the tunnel is solved.

Description

technical field [0001] The invention relates to the field of tunnel construction, in particular to a circumferential pressure-yielding structure and a pressure-yielding method for tunnel pressure-yielding support. Background technique [0002] In deep-buried roadways and tunnels, the weak surrounding rock often undergoes large aging deformation after excavation. Due to the excessive rigidity of the overall support structure of the rigid support system, in the initial stage of the deformation of the soft surrounding rock, the support system bears a large proportion of the excavation and release load of the surrounding rock, and the self-supporting capacity of the rock mass is not fully exerted, and the load of the support structure is generated. The problem of out-of-limit yield failure. The flexible support also has the problem that the deformation cannot be prevented in time, resulting in the final encroachment. Therefore, the tunnel support needs a support structure that...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/18E21D11/22
CPCE21D11/18E21D11/22
Inventor 邵珠山许宁吴奎秦溯
Owner XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
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