Regularities of Destruction in Seam Floor under Different Action Patterns of Water Pressure and
Mining of deep coal resources is more and more seriously threatened by high pressure karst water in seam floor. By using numerical test, the paper analyzed the relationship between the destruction degree of mining disturbance in aquifuge of the floor of working face and the mining width of working face under specific geological conditions, obtained the critical mining width of preventing water hazards from floor of working face and ensuring mining safety. At the same time, in term of essential regularities of karst geology and karst development, the paper seriously studied and analyzed the structural characteristics of high pressure water bearing media in the floor and action patterns of high water pressure on aquifuge of the floor of working face, and classified them into different categories. Through numerical test study, destruction characteristics and conditions inducing water outburst of different water action patterns in overlying aquifuge under disturbance of specific mining and excavating engineering were analyzed, important conclusion that the destruction degree of uneven-distributed water pressure in aquifuge is significantly lower than that of even-distributed water pressure obtained. Under the same water pressure, the destruction extent and depth of water pressure acting along the strike of coal seam are bigger than those of water pressure in other directions in the floor.
Mining Width of Working Face Action Patterns of High Water Pressure Seam Floor Aquifuge Destruction Numerical Test
HU Qianting WU Wenbin CHENG Guoqiang
Key Laboratory of Mining Disaster Prevention and Control, Ministry of Education,Shandong University Key Laboratory of Mining Disaster Prevention and Control, Ministry of Education,Shandong University
国际会议
2010 International Conference on Mine Hazards Prevention and Control(第二届矿山灾害预防与控制国际学术会议 ICMHPC)
青岛
英文
14-22
2010-10-15（万方平台首次上网日期，不代表论文的发表时间）