The mechanism analysis of sand inrush disaster in Shen-Fu mining areas shallow seam
The characteristics of Shen-Fu mining areas coal is shallow seam and being covered with water,the water and sand maybe inrush into gob when the coal is mined.On the base of analysis the hydrology geological conditions and the engineering geological conditions of shallow seam,the conclusion is drawn that it must has four conditions to occur sand inrush in shallow seam mining.The law of roof rocks moving has been studied and if the rock will occur rotating has been judged through the analysis of combinatorial key stratas parameters in shallow seam.The possibility of rock occurring slide after contacting waste has been discussed through the analysis the force of broken rock.According to the rock rotating angle,the contact surface height of broken rocks column has been calculated,and the reasonable contact surface height to ensure not occurs sand inrush has been puts forwarded.These conclusions are confirmed by 1203 coalface in which water inrush occur but sand inrush not occur when mining in Shen-Fu mining area in Shaanxi.
Shen-Fu mining area Shallow seam Sand inrush disaster Rock rotating Rock slide
Zhang Jie Hou Zhongjie Lin Haifei
Dept.of Energy Science and Engineering,Xian University of Science & Technology,Xian 710054,China
国际会议
The 2007 International Conference on Mine Hazards Prevention and Control(2007矿山灾害预防与控制国际学术会议)
青岛
英文
486-490
2007-10-17（万方平台首次上网日期，不代表论文的发表时间）