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Rock burst destroying energy calculation method used for early warning of rock burst

A calculation method and technology of destruction energy, applied in the field of rock mechanics, can solve the problem of lack of research on the dynamic process of rock burst, and achieve the effect of reducing casualties and property losses

Inactive Publication Date: 2019-01-29
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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Problems solved by technology

Therefore, we can find that the current analysis of rockburst mechanism by rock statics is too simple, and there is a lack of research on rockburst dynamics

Method used

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  • Rock burst destroying energy calculation method used for early warning of rock burst
  • Rock burst destroying energy calculation method used for early warning of rock burst
  • Rock burst destroying energy calculation method used for early warning of rock burst

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Embodiment Construction

[0034] The present invention will be described in further detail below through specific implementation examples and in conjunction with the accompanying drawings.

[0035] A calculation method for rockburst destruction energy used for early warning of rockbursts, including calculating the ejection kinetic energy E of rockburst debris by using the particle image detection method PIV 动 、 Calculate the energy E dissipated by the breakage of rock blocks by using the principle of crushing specific work 破 And use the infrared detection system to calculate the heat energy dissipation E during the rockburst process 热 , and finally calculate the total strain energy released during the rockburst, and the total strain energy is E 总 ,E 总 =E 动 +E 破 +E 热 .

[0036] The above calculation method for rockburst destruction energy used for early warning and forecasting rockburst, the particle image velocimetry method calculates the ejection kinetic energy E of rockburst debris 动, includin...

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Abstract

A rock burst destroying energy calculation method used for early warning of a rock burst includes: calculating rock burst chipping ejection kinetic energy (E<k>) through partical image velocimetry (PIV) process , calculating the rock breaking consumption energy (E) through specific crushing energy principle, and calculating the heat energy dissipation quantity (E<h>) during the rock burst process by using an infrared detection system, thereby finally calculating the released total strain energy during the rock burst process, wherein the total strain energy (E<t>) is calculated according toE<t> = E<k> + E + E<h>. Compared with the prior art, with the dynamics process of generation of the rock burst being start point, the released total strain energy during the rock burst process is calculated by means of the PIV process, the specific crushing energy principle and the infrared detection system in the aspect of energy accumulation-release. The method is used for establishing a rockburst destroying energy rule and predicting and early-warning a rock burst, thereby reducing casualties and property loss.

Description

technical field [0001] The invention relates to the technical field of rock mechanics, in particular to a method for calculating rockburst damage energy. Background technique [0002] Rockburst refers to the sudden destruction of rock formations caused by mining. The process of rockburst is often accompanied by large strain in the excavation space, large displacement, and high-speed detachment of rock fragments from the parent rock, throwing them into the mining space. , The quality of the thrown rock mass ranges from several tons to thousands of tons. Rockburst is one of the most harmful geological disasters often encountered in geotechnical engineering. Affected by high ground stress, high ground temperature, high karst water pressure and strong mining disturbance, deep rock mass engineering is strongly affected by complex mechanical environments. And all kinds of rock engineering have played a pivotal role in the survival and development of human beings, and will become...

Claims

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Application Information

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IPC IPC(8): G01N3/313G01L5/14
CPCG01N3/313G01L5/14G01N2203/0218G01N2203/0676
Inventor 黄志全王洪建张玉敏薛雷付宇王闯袁广祥赵菲陈上元
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
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