(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)
Abstract：In the mine under large-scale mining，the complex seismicity induced by extensively mining are familiar；and under the conditions of high stress and hard rock，the areal hazardous seismicity and rockbursts are probable. The seismic apparent stress and deformation are important hypocenter parameters to study the seismic mechanism and prediction. According to the Dongguashan Copper Mine，the characteristics of seismic apparent stress and displacement in the mining process are investigated；and we find that the seismicity shows the areal distribution characteristics which have greatly corresponding relation to the mining activity and distribution of pillars in this mining area. Based on the results，combining with the geological structure and in-situ stress，the areal seismic mechanism in this mining area is studied. It is pointed out that the seismic nucleation mechanism can be explained with the knaggy theory of complex hypocenters of natural earthquakes；and a conceptual model of seismic nucleation in the mine is proposed. Simultaneously，a method to identify the location of potential hazardous seismic areas is discussed in accordance with the seismicity characteristics. Aiming at the areal rock failures，the characteristics of time series of apparent stress and apparent volume are analyzed；and the prediction and assessment of rock failure behavior and seismic risk in the potential seismic nucleation zone are discussed. The research result is applied to the project.
WYSS M，BRUNE J N. Seismic moment，stress and source dimensions for earthquakes in the California-Nevada region[J]. Journal of Geophysical Research，1968，73(14)：4 681-4 694.
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2011, Vol. 30 
