A quantitative analysis method and device for the stability of tunnel surrounding rock

A technology for quantitative analysis of surrounding rock stability, applied in the field of tunnel engineering, can solve the problem of low reliability of tunnel surrounding rock stability analysis, achieve the effect of convenient and feasible analysis process, realize quantitative design, and improve economy and safety

Active Publication Date: 2021-04-02
CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

It can be seen that the reliability of these methods for the stability analysis of tunnel surrounding rock is not high

Method used

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  • A quantitative analysis method and device for the stability of tunnel surrounding rock
  • A quantitative analysis method and device for the stability of tunnel surrounding rock
  • A quantitative analysis method and device for the stability of tunnel surrounding rock

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Embodiment Construction

[0054] 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.

[0055] It should be noted that the quantitative analysis method for the stability of tunnel surrounding rock provided by the present invention can be applied to electronic equipment. In specific applications, the electronic equipment can be a tablet, a mobile phone, a personal computer, a computer, a server, and the like.

[0056] see figure 1 , the embodiment of the present invention provides a quantitative analysis method for the stability of tunnel surround...

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Abstract

The invention provides a tunnel surrounding rock stability quantitative analysis method and device. The method comprises the steps that parameter information of a tunnel is obtained; wherein the parameter information of the tunnel comprises the size, the central buried depth and the geometrical shape of the excavated section and the physical and mechanical parameters of the surrounding rock of thetunnel; calculating a critical stable section by using the obtained parameter information, wherein the critical stable section is the maximum section which has the same burial depth as the center ofthe excavated section, is similar to the geometrical shape and can self-stabilize the surrounding rock of the tunnel in a support-free state; if the size of the excavated section is greater than thatof the critical stable section, determining that the tunnel surrounding rock needs to be supported; if the size of the excavation section is not larger than that of the critical stable section, calculating the safety coefficient when surrounding rock in the critical stable section serves as a supporting structure, and determining whether the tunnel surrounding rock needs supporting or not according to the safety coefficient obtained through calculation; and if it is determined that supporting is needed, calculating the magnitude of supporting force. By applying the embodiment of the invention,the reliability of stability analysis of the tunnel surrounding rock is improved.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a quantitative analysis method and device for the stability of surrounding rock of a tunnel. Background technique [0002] The tunnel surrounding rock is both the source and the main body of the load, so the stability analysis of the tunnel surrounding rock is of great significance. But at present, there is no clear calculation model and method for the stability analysis of tunnel surrounding rock in the industry. At present, the strength reduction method and the limit equilibrium analysis method are mostly used. Generally speaking, the deterioration of the strength parameters of the tunnel surrounding rock is not holistic, and the strength reduction method usually reduces the strength of the surrounding rock as a whole, ignoring the possibility of the tunnel surrounding rock as a component of the bearing or supporting structure. The limit equilibrium analysis method applied t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V11/00
CPCG01V11/00
Inventor 肖明清徐晨王克金邓朝辉龚彦峰焦齐柱孙文昊
Owner CHINA RAILWAY SIYUAN SURVEY & DESIGN GRP
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