近厚松散层开采煤层底板采动破坏研究  

Study on Mining Destruction of Coal Seam Floor Near Thick Loose Layer

作　　者：李鹏飞[1] 刘启蒙[1] 陈秀艳[1] 

机构地区：[1]安徽理工大学,安徽淮南232001

出　　处：《煤炭技术》2017年第4期69-70,共2页Coal Technology

摘　　要：以祁东煤矿7131工作面为例,采用FLAC3D模拟了厚松散层覆盖下的煤层开采底板破坏特征,并与经验公式计算结果进行对比分析。结果显示:厚松散层覆盖下的煤层底板岩层由于受到上覆高自重应力的影响,破坏深度和形式与基岩覆盖下煤层开采存在一定的差异。Taking 7131 working face in Qidong coal mine as an example, the floor destruction characteristics of coal seam mining under thick loose layer are simulated by FLAC^3D,and analyzes the differences by comparing the simulated results with the results calculated by theoretical formula. The results show that there is a certain difference with the mining under bedrock and the mining under thick loose layer in the form and depth of the destruction, because the floor rock strata of the coal seam covered with the thick loose layer is affected by the high overlying self-weight stress.

关 键 词：近厚松散层开采 底板采动破坏 数值模拟 

分 类 号：TD327[矿业工程—矿井建设]