遗留煤柱边界下方撤面巷道合理位置确定研究  

Study on determination of reasonable position of retreating roadway under boundaryof residual coal pillar

作　　者：张明[1] 刘同达 于正兴[2] 魏全德 杨世纪 温经林 田鑫 ZHANG Ming;LIU Tongda;YU Zhengxing;WEI Quande;YANG Shiji;WEN Jinglin;TIAN Xin(State Key Laboratory of Mining Response and Disaster Prevention and Control in Deep Coal Mines,Anhui University of Science and Technology,Huainan Anhui 232001,China;China Academy of Safety Science and Technology,Beijing 100012,China;School of Emergency Technology and Management,North China Institute of Science and Technology,Langfang Hebei 065201,China)

机构地区：[1]安徽理工大学深部煤矿采动响应与灾害防控国家重点实验室,安徽淮南232001 [2]中国安全生产科学研究院,北京100012 [3]华北科技学院应急技术与管理学院,河北廊坊065201

出　　处：《中国安全生产科学技术》2024年第1期50-57,共8页Journal of Safety Science and Technology

基　　金：国家自然科学基金项目(52104114)。

摘　　要：为了确定遗留煤柱边界下方撤面巷道合理布置位置,以内蒙古某矿为研究对象,基于遗留煤柱覆岩空间结构,探究应力在底板的传递规律,通过构建“上煤层遗留煤柱传递应力-下煤层巷道掘进应力”应力叠加计算模型,分析外错距离与撤面巷道围岩安全稳定之间的关系。研究结果表明:在遗留煤柱的“支撑”作用下,煤柱煤体及其上覆岩层近似成“T”型空间结构;10 m外错距离满足现场安全生产和巷道围岩控制的要求。研究结果可为相似开采条件下的巷道稳定评估和合理位置确定提供参考。In order to determine the reasonable layout position of the retreating roadway under the boundary of residual coal pillar,a specific mine in Inner Mongolia was taken as the research object.Based on the spatial structure of the overlying rock of the residual coal pillar,the transmission law of stress on the floor was explored.By constructing a stress superposition calculation model of“stress transmission from the upper coal seam’s residual coal pillar to the stress induced by the excavation of the lower coal seam roadway”,the relationship between the external staggered distance and the safety and stability of surrounding rock of the retreating roadway was analyzed.The results show that under the“support”effect of the residual coal pillar,the coal pillar body and its overlying rock are approximately the T-shaped spatial structure.A 10 m external staggered distance meets the requirements of on-site work safety and control of the roadway surrounding rock.The research results can provide reference for the stability evaluation and reasonable position determination of roadway under similar mining conditions.

关 键 词：采矿工程 遗留煤柱 应力传递 围岩稳定 安全错距 

分 类 号：X936[环境科学与工程—安全科学]