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Judging, grading and processing method of rockburst of hard rocks for tunnel

A processing method and technology for rock bursts, which are applied in the fields of identification and treatment of hard rock bursts in tunnels, grading and processing, can solve the problems of large investment in safety costs, increased production costs, and low safety, and reduce safety costs. , reduce investment and ensure the effect of personal safety

Inactive Publication Date: 2015-05-27
CHINA RAILWAY 16TH BUREAU GRP 5TH ENG
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Problems solved by technology

After the actual measurement of the ground stress, the rockburst prediction and evaluation method generally adopts one of the engineering rock mass classification standard discrimination method, Russenes discrimination method, Turchaninov discrimination method, and Hoek discrimination method commonly used in strength theory. However, The above-mentioned traditional method has low safety, large investment in safety expenses, long construction period, and increased production cost

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  • Judging, grading and processing method of rockburst of hard rocks for tunnel
  • Judging, grading and processing method of rockburst of hard rocks for tunnel
  • Judging, grading and processing method of rockburst of hard rocks for tunnel

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Embodiment 1

[0029] A method for judging, classifying and treating hard rock bursts in tunnels, comprising the following steps:

[0030] 1) Rock block and rock mass strength test of tunnel surrounding rock: including indoor rock uniaxial strength test and triaxial strength test, on-site rock mass elastic modulus test, and on-site geological survey.

[0031] The mechanical property test of the rock block is carried out on the RMT-150 rock test system. The sample is granite, which is taken from the in-situ stress drill core at DK223+100 of the Meihuashan Tunnel. The samples are all in the experimental factory of the Wuhan Institute of Rock and Soil Mechanics, Chinese Academy of Sciences. Processing, the direct deviation of the sample is less than 0.2mm, the non-parallelism of the section is less than 0.02mm, the deviation of the end surface and the axis perpendicularity is less than 0.001 radians, and the axis of all samples is consistent with the core axis. According to the requirements, un...

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Abstract

The invention discloses a judging, grading and processing method of rockburst of hard rocks for a tunnel. The method comprises the steps of geological survey, designing of schemes, geological generalization and numerical simulation modeling to finally obtain rockburst prevention and control suggestions and measures. The method has the advantages that tunnel construction with high stress can be improved, the security risk caused by rockburst in the tunnel construction is reduced, the security expenses are reduced, the active economic benefit is achieved, the security risk is greatly reduced, the construction period is shortened, the cost is reduced, and the input of security expenses is reduced.

Description

technical field [0001] The invention relates to a technology for discriminating and treating hard rock bursts in tunnels, in particular to a method for judging, grading and treating hard rock bursts in tunnels, belonging to the field of hard rock bursts in tunnels. Background technique [0002] Rockburst is mainly through testing the strength of rock, mainly including indoor rock uniaxial strength test and triaxial strength test, on-site rock mass elastic modulus test, and on-site geological survey. After the actual measurement of the ground stress, the rockburst prediction and evaluation method generally adopts one of the engineering rock mass classification standard discrimination method, Russenes discrimination method, Turchaninov discrimination method, and Hoek discrimination method commonly used in strength theory. However, The above-mentioned traditional method has low safety, large safety cost investment, long construction period, and increased production cost. Cont...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/24G01N3/00
Inventor 李卫兵高周俊李建新陈杰华胡亮郭雷孟伟赵曼
Owner CHINA RAILWAY 16TH BUREAU GRP 5TH ENG
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