Numerical simulation of coal mining in the footwall of large thrust fault with high pressure ordovician water
It is very difficult to prevent and cane the water disaster when the mine suffered the risk of ordovician water under floor,which also is the difficult problem of water prevention and cure both here and abroad.The LiuXin mine in XuZhou is now exploiting the No.7 coal seam in Shansi formation at the footwall of F16 thrust fault.The floor ofp No.7 coal seam suffered the high pressure of ordovician water about 7Mpa.The 732 workface is lay parallel the fault strike line under F16 thrust fault,which close to line of intersection of the fault and coal seam about 50m.The fault-throw of F16 fault is 36-200m.the geological exploration indicate,the thrust fault have staggered the roof of ordovician strata at the hanging wall up to the No.7 coal seam at the footwall of F16 fault just about 60m.Under the pesent mining conditions,will the F16 fault move disturbed by rock pressure,will the high pressure ordovician water rush in to the stope along the fault face and threaten the safety of mine.Those problems must be investigated for the mining works.This paper simulates the mining work of 732 workface by geotechnical engineering software FLAC2D and obtained a series of valuable conclusions.
Thrust fault Ordovician water Numerical simulation
Wu Yu Wang Lianguo Miao Xiexing Li Hailiang
School of Sciences,China University of Mining &Technology,Xuzhou,Jiangsu 221008,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
617-621
2007-10-17（万方平台首次上网日期，不代表论文的发表时间）