大规模开采矿山地震视应力和变形与区域性危险地震预测

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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.

Key words： mining engineering large-scale mining deep mine areal mining-induced seismicity seismic apparent stress seismic deformation rockburst

Received: 15 February 2011

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https://rockmech.whrsm.ac.cn/EN/Y2011/V30/I6/1168

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