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Skylight-forming lining structure repair method for tunnels

A repair method and lining technology, applied in tunnel lining, tunnel, shaft lining and other directions, can solve problems such as safety accidents, reduce the bearing capacity of lining structures, deteriorate the stress conditions of lining structures, etc. Effects that are easy to implement

Active Publication Date: 2015-12-23
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After the type of tunnel lining is determined, the lining thickness and concrete strength are the basic elements to ensure the bearing capacity of the lining. When the two are insufficient, the bearing capacity of the lining structure will be reduced, especially when there is a void behind the lining, which will further deteriorate the lining structure. Stress conditions may lead to the occurrence of safety accidents

Method used

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  • Skylight-forming lining structure repair method for tunnels
  • Skylight-forming lining structure repair method for tunnels
  • Skylight-forming lining structure repair method for tunnels

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Embodiment Construction

[0032] The specific implementation manner of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0033] see figure 1 , figure 2 and image 3 , the method for repairing the lining structure of the tunnel skylight, by chiseling out the original defective concrete to form a partial skylight, implanting the lining and repairing steel bars, closing the skylight with layered mesh shotcrete or molded concrete, and then using anchor rods, steel mesh, steel bars Brazing nails and screen shotcrete connect the original defect and the surrounding qualified lining into a whole.

[0034] The shape of the skylight is a regular figure including rectangle, square, quadrilateral or trapezoid with an acute angle greater than 70°

[0035] The original defective part and the surrounding qualified lining are connected as a whole with the hollow anchor rod 5, the lining treatment steel bar 3, the steel mesh 4 and the shotcrete 7.

[0036] see...

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Abstract

The invention discloses a skylight-forming lining structure repair method for tunnels. A local skylight is formed after original flawed concrete is removed and then closed through layered mesh concrete after lining repair steel bars are embedded, and then the original flawed part and surrounding qualified linings are connected into a whole through anchor rods, steel bar meshes, steel bar drilling nails and mesh concrete. The skylight-forming lining structure repair method is mainly used for repairing the diseases that tunnel lining concrete severely lacks thickness or strength or voids are formed in the backs of the linings, is easy to implement and can be used for repairing lining structures, the repair method and process are fast and effective, the repair time can be greatly shortened, and the construction process safety and the structural safety can be guaranteed. The skylight-forming lining structure repair method is especially suitable for reinforcing the tunnel linings of railways in operation and can bring great economic benefits.

Description

technical field [0001] The invention relates to a tunnel lining structure repair method, in particular to a tunnel skylight lining structure repair method. Background technique [0002] Insufficient thickness and insufficient strength of tunnel lining account for a very high proportion of tunnel defects and diseases. After the type of tunnel lining is determined, the lining thickness and concrete strength are the basic elements to ensure the bearing capacity of the lining. When the two are insufficient, the bearing capacity of the lining structure will be reduced, especially when there is a void behind the lining, which will further deteriorate the lining structure. The stress conditions may lead to the occurrence of safety accidents. For the treatment of such tunnel defects and diseases, the effectiveness of the renovation plan should be ensured, while construction safety, construction speed and economic benefits should be taken into consideration. Contents of the invent...

Claims

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Application Information

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IPC IPC(8): E21D11/00E21D11/38E21D11/10E21D20/00
Inventor 王立川姚勇周东伟张鹏阳军生刘锦成
Owner CENT SOUTH UNIV
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