深井不等宽断层煤柱诱发冲击地压机理研究  

Mechanism of rockburst induced by fault coal pillars with different widths in deep shaft

作　　者：杨伟利[1] 林强 魏全德 曲效成 王继超 刘星 YANG Wei-li;LIN Qiang;WEI Quan-de;QU Xiao-cheng;WANG Ji-chao;LIU Xing(School of Civil Engineering and Architecture,Zhongyuan University of Technology,Zhengzhou 451191,China;Beijing Anke Xingye Research Institute Company Limited of Mine Safety Technology,Beijing 102299,China;Anju Coal Mine,Jining Mining Industry Group Co.,Ltd.,Jining 272000,China)

机构地区：[1]中原工学院建筑工程学院,河南郑州451191 [2]北京安科兴业矿山安全技术研究院有限公司,北京102299 [3]济宁矿业集团有限公司安居煤矿,山东济宁272000

出　　处：《煤炭工程》2020年第7期112-116,共5页Coal Engineering

基　　金：河南省高等学校重点科研项目计划资助(19A440012)。

摘　　要：以采深超千米且存在不等宽断层煤柱工作面为工程背景,分析了断层构造应力和临断层采动工作面上覆岩层运移对冲击地压的影响,进而研究了不等宽断层煤柱诱冲机理。研究表明,断层构造应力和煤层上方悬露覆岩应力叠加超过不等宽断层煤柱综合强度导致了冲击地压发生。通过构建断层构造应力模型、悬露覆岩载荷模型和不等宽断层煤柱承载模型,推导了不等宽断层煤柱能否发生冲击的力学判别式,可用于断层煤柱区域冲击危险区的精确划分,为提前采取针对措施提供依据。研究成果经现场实践,实现了工作面安全开采。With the engineering background of working face of a mine whose mining depth is more than 1000 meters and in which fault coal pillars with different widths exist,the influence of tectonic stress and migration of overlying rocks of the mining face adjacent to the fault on rockburst are analyzed,to study the rockburst mechanism induced by fault coal pillars with different widths in deep shaft.The study shows that the rockburst was caused by the tectonic stress of faults and the stress of hanging overlying rocks above the coal seam,which exceeded the strength of the fault coal pillars.By constructing the tectonic stress model of faults,the load model of hanging overlying rocks and the bearing model of fault coal pillars with different widths,the mechanical discriminant is deduced for the rockburst possibility of fault coal pillars with different widths,which can be used to accurately define the burst hazard area,and provide basis for taking prevention and control measures in advance.Field practice has been made based on the research achievements,realizing safe mining of the working face.

关 键 词：采动工作面 断层煤柱 冲击地压 冲击危险区 

分 类 号：TD324[矿业工程—矿井建设]