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| RESEARCH ON RESPONSE OF MINE MICROSEISMICITY TO MINING RATE BASED ON QUANTITATIVE SEISMOLOGY |
| TANG Lizhong1，ZHANG Jun1，LI Xibing1，WANG Linghui1，2，ZHOU Jianxiong1，LIU Tao1 |
(1. School of Resources and Safety Engineering，Central South University，Changsha，Hunan 410083，China；
2. Dongguashan Copper Mine，Tongling Nonferrous Metal Group，Tongling，Anhui 244031，China) |
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Abstract Seismicity in mines is dynamic response of rock mass to mining and reflects the stress state，deformation and destruction of rock mass. Using the time history methods of the cumulative apparent volume ?VA，energy index EI and cumulative volume of production ?Vm，the relationship between seismic deformation and mining rate is studied in the framework of quantitative seismology with the seismic data monitored in Donguashan Copper Mine. According to the view of storage and release of energy，combining with seismic apparent volume VA and elastic convergence volume VE，the ratio of the cumulative apparent volume ∑VA to the cumulative volume of production ?Vm is defined as coefficient of seismic response to mining(CSR) to present the relationship between energy storage and energy release in rock mass. The results show that，the volume of production influences obviously on time history curves of ?VA and EI；there is a correlation between mining rate and seismic strain rate；the variation of CSR indicates the tendency of stability of rock mass system，which can be easily used in analysis of mine seismicity monitoring and as a good guide parameter to control mining rate.
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2012, Vol. 31 
