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Tunnel supporting structure

A technology for supporting structures and tunnels, which is applied in tunnels, tunnel linings, shaft linings, etc. It can solve problems such as hindering later rescue, difficulty adapting to combined deformation of tension, compression, bending, shearing, and torsion, and large excavation volume, so as to ensure normal use. Effect

Pending Publication Date: 2021-09-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The displacement of the first method is limited, and it is not suitable for faults with small fault widths. The second method has a large amount of excavation when the fault width is large, and the engineering volume increases sharply when the fault displacement is large. Under static conditions The increased size of the lower chamber increases the risk of tunnel instability
In addition, after the earthquake, these two methods are prone to the problem of lining misalignment, and it is difficult to adapt to the combined deformation of tension, compression, bending, shearing and torsion, which will affect the normal use of lifeline projects and hinder later rescue

Method used

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Embodiment

[0038] see figure 1 , figure 1 It is a structural schematic diagram of the tunnel support structure 10 provided in the embodiment of the present invention when it is applied to the tunnel structure 100 . At this time, the outer peripheral surface of the tunnel support structure 10 corresponds to the active fault zone 910 of the surrounding rock 900 .

[0039]An embodiment of the present invention provides a tunnel support structure 10 for supporting an active fault zone 910. The tunnel support structure 10 can not only adapt to large-scale shear deformation and combined deformation of tension, compression, bending, shear, and torsion, but also enable After the earthquake, the inner lining 12 of the tunnel structure 100 will not be damaged due to misalignment, so as to ensure the normal use of the tunnel structure 100, ensure the smooth lifeline, and provide guarantee for later rescue. The tunnel support structure 10 can be applied to a scene where an active fault zone 910 ex...

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Abstract

The invention discloses a tunnel supporting structure, and relates to the technical field of tunnel supporting. The tunnel supporting structure comprises an outer-layer lining, an inner-layer lining and a filling material, wherein, The outer side face of the outer layer lining is used for corresponding to an active fault zone of surrounding rock and is arranged on the inner layer lining in a sleeving mode, and the filling material is steel beads and is arranged between the outer layer lining and the inner layer lining. The tunnel supporting structure can adapt to large-scale shear deformation and tension, compression, bending, shear and torsion combined deformation, and the inner layer lining of the tunnel structure cannot be damaged by slab faulting after an earthquake.

Description

technical field [0001] The invention relates to the technical field of tunnel support, in particular to a tunnel support structure. Background technique [0002] With the development of my country's transportation construction, tunnels have gradually developed into the main means of crossing complex geological environments, but the corresponding engineering problems are unavoidable. Among them, the engineering problems of tunnels crossing large-scale active faults need to be solved urgently. [0003] The impact of active faults on tunnel engineering is mainly divided into two categories: (1) damage caused by permanent deformation of fault dislocation, mainly shear damage of tunnel lining caused by relative shear deformation and combined damage of tension, compression, bending, shear and torsion; 2) The differential vibration of seismic waves in the fault zone and non-fault zone stratum causes deformation and damage to the tunnel lining, and the damage degree of the former is...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/04E21D11/08E21D11/15E21D11/38
CPCE21D11/08E21D11/003E21D11/152E21D11/04E21D11/38
Inventor 仇文革段东亚
Owner SOUTHWEST JIAOTONG UNIV
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