大倾角综采工作面覆岩运移规律  

Law of overburden strata above longwall coal mining face in high inclined seam based on FLAC3D

作　　者：张春雷[1] 张世青[1] 赵健健[1] 李增峰[1,2] 马越[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]新疆焦煤有限责任公司,新疆乌鲁木齐830025

出　　处：《辽宁工程技术大学学报（自然科学版）》2014年第6期736-740,共5页Journal of Liaoning Technical University (Natural Science)

基　　金：国家重点基础研究计划基金资助项目(973);(2013CB227900);国家级大学生创新科技训练计划基金资助项目(201311413004)

摘　　要：为研究大倾角综采工作面覆岩运移规律,运用FLAC3D数值模拟软件建立模型,分别模拟了煤层开采过程中不同推进距离的围岩垂直应力分布,以及顶底板垂直位移,并通过现场对液压支架工作阻力沿推进方向和倾斜方向的统计分析,进一步分析了大倾角工作面覆岩运移特征.结果表明:大倾角煤层开采过程中,沿工作面倾斜方向垂直应力和位移具有非对称性,中部和上部覆岩位移量和垂直应力释放范围均较下部大,覆岩活动较为剧烈.研究结论为工作面支架安全管理提供了依据.For the study of overburden strata movement law in high inclined seam, this paper established the model based on FLAC3D, and monitored the vertical stress and displacement of roof and floor in 25221 Large-mining-height in different forward distance, and then obtained the overburden strata space activity law by monitoring and analyzing the shield working resistance of the high inclined seam workface. The results showed that during the mechanized strike longwall coal process in the high inclined seam, the movement of overburden strata in top area was more active than the low area along the inclined direction of the coal mining face. The research conclusion provides basis for the safety management of hydraulic support.

关 键 词：大倾角煤层 FLAC3D数值模拟 覆岩运动规律 非对称性 工作面安全管理 

分 类 号：TD323[矿业工程—矿井建设]