【摘 要】
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On account of increasingly frequent rock burst hazards at present,the theoretical basis of rock burst determination through P-wave velocity was analyzed based on the experiment relation model of stres
【机 构】
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State Key Laboratory of Coal Resources and Safe Mining,School of Mines,China University of Mining an
【出 处】
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2014年中国地球科学联合学术年会
论文部分内容阅读
On account of increasingly frequent rock burst hazards at present,the theoretical basis of rock burst determination through P-wave velocity was analyzed based on the experiment relation model of stress and P-wave velocity.Meanwhile,the technology of rock burst risk assessment was established using the combination of tomography and microseismic monitoring system (called mine tremor seismic velocity tomography).It contains assessment parameters of wave velocity anomaly An and wave velocity gradient anomaly VG.The criterion of these parameters was documented.Finally,the assessment technology was verified by practical application.The results show that the P-wave velocity can reflect the strength criterion,energy criterion,and dynamic load criterion for rock burst as for the rock mass with the same properties.The mine tremor seismic velocity tomography is feasible for rock burst risk assessment.It can give guidance on the implement of risk relief measures and check the effect of the measures.
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