LIU Jie, CHEN Haidong, WANG Liang, YANG Yuekui, CHENG Yuanping, LI Peiqing, WANG Feng
Based on theoretical analysis, similarity simulation tests, numerical simulation analysis and field observations, we analyzed rock collapse and rules of fraction evolution of overlying rocks and studied the rules in controlling the effect of an extremely thick igneous rock, found above a main mining coal seam in an area prone to coal mine disasters in the Haizi Coal Mine. The results show that thi...... hiện toàn bộ