关键词: 巷道围岩, 冲击破坏, 动静载, 扰动, FLAC2D数值模拟

Abstract: According to the lower trough rock burst accident of the 1306 working face of a mine,based on the large energy source monitored by SOS micro-seismic monitoring system,the analysis model under the acutal geological conditions is established by adopting FLAC2D software,so as to study the involution regularities of the stress and displacement of roadway roof and floor under the superimposed action of static and dynamic load.The mechanical response characteristics of the roadway surrounding rock under the different superimposed strength of static and dynamic load is simulated and analyzed by transforming the source location.The study results show that:with the with the source location is far way from the monitoring locations,which influence of the roadway roof and floor is decreased rapidly,and the influence of two sides of roadway are also reduced proportionally.The above study results in this paper can provide some theoretical basis and field guiding significance for the study of slope stability under the superimposed influence of static and dynamic load.

Key words: Roadway surrounding rock, Impact failure, Static and dynamic load, Disturbance, FLAC2D numerical simulation