摘要
选取鄂尔多斯盆地某典型的煤矿区,通过FLAC^(3D)数值模拟、相似材料模拟以及理论计算,对煤层开挖后上覆岩层稳定性进行模拟研究,预测多种采动下地层动力学发生失稳及周围岩体应力重分布的规律及影响范围。研究结果表明,FLAC^(3D)能够较好地模拟煤层开挖给上覆岩层带来的影响;煤层开挖后,采空区上方竖向位移呈现中间大,两边小的趋势;采空区的影响范围略大于开采范围。
Selecting a typical coal mining area in Ordos Basin,through FLAC3D numerical simulation,similar material simulation and theoretical calculation,the stability of overlying strata after coal seam excavation is simulated and studied,and the regularity and influence range of strata dynamics instability and stress redistribution of surrounding rock mass under various mining conditions are predicted. The results show that FLAC3D can well simulate the influence of coal seam excavation on overlying strata. After coal seam excavation,the vertical displacement over the goaf shows a trend of large in the middle and small on both sides,and the influence scope of the goaf is slightly larger than that of the mining area.
作者
张谦
张延军
于子望
张通
张雨
罗银飞
ZHANG Qian;ZHANG Yan-jun;YU Zi-wang;ZHANG Tong;ZHANG Yu;LUO Yin-fei(College of Construction Engineering,Jilin University,Changchun 130026,China;Key Lab of Geo-environmental Qinghai Province,Xining 810007,China;Environmental Geological Prospecting Bureau of Qinghai Province,Xining 810007,China;Geological Environment Protection and Disaster Prevention Engineering Technology Research Center,Xining 810007,China)
出处
《世界地质》
CAS
2019年第1期293-301,共9页
World Geology
基金
青海省科学技术厅基础研究计划项目(2016-ZJ-769)
青海省地质勘查基金项目(201602016sh010)联合资助
关键词
煤层开挖
数值模拟
FLAC3D
相似材料模拟
coal seam excavation
numerical simulation
FLAC3D
similar material simulation
