摘要
针对巨厚砾岩下特厚煤层工作面冲击地压防治技术难题,以河南义马矿区耿村煤矿13230回采工作面为例。通过数值模拟和现场实测数据分析,探索了工作面超前扰动影响范围。数值模拟得到,工作面超前支承压力影响范围为305 m。微地震监测数据揭示的13230工作面回采超前扰动影响范围平均为275 m。煤层钻孔应力数据揭示的13230工作面回采超前扰动影响范围平均为265.4 m。综合数值模拟结果和现场实测数据的分析结果得出,在13230工作面回采过程中超前工作面300 m范围内实施卸压措施,提高了冲击地压防治效率,保障了工作面的安全回采。
Aiming at the technical problem of prevention and control of ground pressure in working face of extra-thick coal seam under huge thick conglomerate,the 13230 mining face of Gengcun Coal Mine in Yima Mining Area of Henan Province is taken as an example.By numerical simulation and field data analysis to explore the face ahead of the disturbance influence.Numerical simulation results show that the front bearing pressure of the working face has an influence range of 305 m.The microseismic monitoring data reveals that the 13230 working face mining lead disturbance has an average impact range of 275 m.The coal seam borehole stress data reveals that the 13230 working face mining lead disturbance has an average impact range of 265.4 m.Based on the comprehensive numerical simulation results and the analysis results of the field measured data,it is determined that the pressure relief measures are implemented within 300 m of the leading working face during the mining process of the 13230 working face,which improves the prevention and control efficiency of the rock burst and ensures the safe production of the working face.
作者
董亚东
魏全德
康洪涛
魏向志
Dong Yadong;Wei Quande;Kang Hongtao;Wei Xiangzhi(Ordos Yihua Mining and Resources Co.,Ltd.,Wushenqi 017300,China;Beijing Anke Xingye Research Institute of Mine Safety Co.,Ltd.,Beijing 102299,China;Beijing Anke Technology Co.,ltd.,Beijing100083,China;Yima Coal Industry Group Co.,Ltd.,Yima 472300,China)
出处
《能源与环保》
2018年第12期194-198,共5页
CHINA ENERGY AND ENVIRONMENTAL PROTECTION
关键词
巨厚砾岩
特厚煤层
冲击地压
钻孔应力
微地震
huge thick conglomerate
extra-thick coal seam
rock burst
borehole stress
microseismic
