Analysis of the Safety of Longwall Mining under Water Body——Case Study
Coal mining under water bodies needs to ensure the safety of the underground coal mine from flooding. On the other hand, the surface or ground water resources also need to be protected from damage. Based on field reconnaissance and data collection, the fractured zone in overburden strata and surface movement and deformation after longwall mining were predicted according to the specific mining and geologic conditions in Micun Coal Mine, China. Then the safety of longwall mining under the water body was analyzed and evaluated in this paper. The results show that there are very thick overburden strata between the top of the fractured zone and the bottom of the water body after undermining it. So the fractured zone in the overburden strata cannot reach the bottom of the water body. The effects of longwall mining on the dam were also analyzed based on the predicting results of surface movement and deformation. At last, the technically protective measures are put forward.
longwall mining mining under water bodies mining damage safety
GUO Wenbing LI Xiaoshuang
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo454003, Henan, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
284-288
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）