Overlying Coal Seam Goaf Gas Change Law in Close-distance Coal Seam Group Mining
LI Xian-lan1,2, WANG Jun-feng1
1. School of Engineering, Taiyuan University of Technology, Taiyuan 030024, China; 2. Datong coal vocational and technical college, Datong 037003, China
Connecting cracks appearing between adjacent layer in closed distance seam group, with complex mining situation and air leakage of close coal seam group caused by ventilation in different coal seam, in the study of air leakage law, law of goal air leakage were coal mine coal seam group of field engineering is different from single coal seam mining law of air leakage, with complex distribution law of goaf air and difficulty of goaf coal seam spontaneous combustion prediction. Theoretical analysis combined with field monitoring was used to study overlying coal goaf gas change rule in mining of closed distance coal seam group, which provided scientific basis for goaf coal spontaneous combustion prevention.
李鲜兰, 王俊峰. 近距离煤层群开采过程中上覆煤层采空区气体变化规律[J]. 煤炭与化工, 2015, 38(6): 17-19,23.
LI Xian-lan, WANG Jun-feng. Overlying Coal Seam Goaf Gas Change Law in Close-distance Coal Seam Group Mining. CCI, 2015, 38(6): 17-19,23.