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Unsymmetrical pressure resisting method of self-propelled long anchor bolt encircling locking foot for advance pipe shed and arch frame

A technology of anchor rods and pipe sheds, which is applied in the installation of anchor rods, earthwork drilling, shaft equipment, etc. It can solve problems such as tunnel rupture and collapse, and achieve the effect of preventing bias deformation and improving the effect of locking feet

Active Publication Date: 2020-10-02
CHINA RAILWAY 18TH BUREAU GRP CO LTD +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tunnels can crack and collapse in severe cases if not handled properly

Method used

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  • Unsymmetrical pressure resisting method of self-propelled long anchor bolt encircling locking foot for advance pipe shed and arch frame
  • Unsymmetrical pressure resisting method of self-propelled long anchor bolt encircling locking foot for advance pipe shed and arch frame
  • Unsymmetrical pressure resisting method of self-propelled long anchor bolt encircling locking foot for advance pipe shed and arch frame

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Embodiment Construction

[0037] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0038] The purpose of the present invention is to provide a method for anti-bias pressure of the self-advancing long anchor rods surrounding the locking feet of the advanced pipe shed and the arch frame. The construction technology is improved to improve the locking effect of the locking feet, quickly play a supporting role, and effectively prevent bias deformation and invasion.

[0039] In order to make the above objects, features and advantages of the presen...

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Abstract

The invention discloses an unsymmetrical pressure resisting method of a self-propelled long anchor bolt encircling locking foot for an advance pipe shed and an arch frame. The method is used for performing support reinforcement on the upper half cross section of a tunnel, and mainly comprises three processes of advance support, preliminary support and secondary lining. In comparison with the priorart, according to the method, by adopting a support system with the combination of the half-cross-section pipe shed and the arch frame and improving the construction technology of an arch frame locking foot, the locking effect of the locking foot is enhanced; the support action can be quickly achieved; and the unsymmetrical-pressure deformation and the clearance intrusion are effectively prevented.

Description

technical field [0001] The invention relates to the technical field of tunnel support in weak surrounding rocks, in particular to a method for anti-bias pressure of an advanced pipe shed and an arch frame self-advancing long anchor rods to enclose lock feet. Background technique [0002] The unbalanced tunnel is formed by asymmetrical loads on both sides of the tunnel structure due to terrain asymmetry or geological rock formation factors. When the tunnel entrance is located on an unstable hillside with poor terrain conditions, and the thickness of the soil layer on both sides of the top of the tunnel is seriously inconsistent, it is a bias phenomenon. If not handled properly, the tunnel can crack and collapse in severe cases. When the pressure on one side of the tunnel is too high, the stress on the tunnel structure is not uniform, local stress concentration and excessive deformation may lead to shear failure of the tunnel structure. [0003] For example, the Daxing Tunne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D11/00E21D11/10E21D20/02E21D11/15E21D11/18
CPCE21D11/00E21D11/10E21D20/021E21D11/152E21D11/18
Inventor 张湘平张春武曹文权南玉芳周俊威
Owner CHINA RAILWAY 18TH BUREAU GRP CO LTD
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