Research on the Height of Water Flowing Fractured Zone of Fully Mechanized Caving Mining in Extra-thick Coal Seam

摘要：

Failure height of overlying rock mass in extra-thick coal seam conditions by fully mechanized caving mining affects the groundwater occurrence condition, which in turn, affects mine safety. Aiming at extrathick coal seam conditions, this paper numerically stimulates the dynamic process of actual excavation. Results show that failure height increases with excavation volume, thereby increasing the location of abscission layer dropping along with increasing failure height. An abscission layer is formed along the depth, changing the condition of groundwater occurrence and exposing a hidden safety hazard in the field of continuous mining. The simulation results are in line with the fact by verification with drilling survey data.

关键词： Fully mechanized caving mining Rock movement Deformation Water flowing fractured zone Extra-thick coal seam

作者: FENG Shaojie SUN Shiguo LV Yuguo LV Ji

作者单位: School of Soil and Water Conservation,Beijing Forestry University, Beijing 100083,China College of A Laohutai Mine, Fushun Mining Group,Fushun,Liaoning,ll3008,China College of Architecture and Civil Engineering, North China University of Technology, Beijing,100144,

会议类型: 国际会议

会议名称: The First International Symposium on Mine Safety Science and Engineering (首届矿山安全科学与工程学术会议)

会议地点: 北京

会议语种:英文

页码: 499-504

在线出版日期: 2011-10-27（万方平台首次上网日期，不代表论文的发表时间）