构造应力作用下巷道底板冲击破坏的原因分析  

Analysis of Causes on Roadway Floor Impact Damage under the Action of Tectonic Stress

作　　者：谢龙[1,2] 窦林名[1,2] 刘命元[3] 于贵良 温颖远[1,2] 易恩兵[1,2] 

机构地区：[1]煤炭资源与安全开采国家重点实验室,江苏徐州221008 [2]中国矿业大学矿业工程学院,江苏徐州221008 [3]中国矿业大学力学与建筑工程学院,江苏徐州221008 [4]华亭煤业集团砚北煤矿,甘肃平凉744100

出　　处：《煤矿安全》2012年第1期153-156,共4页Safety in Coal Mines

基　　金：国家重点基础研究发展规划(973)资助项目(2010CB226805);煤炭资源与安全开采国家重点实验室自主研究课题资助项目(SKLCRSM10X05);江苏高校优势学科建设工程资助项目(PAPD)

摘　　要：针对在褶皱区构造应力作用下回采巷道底板冲击频发的问题,基于底板冲击发生的力学条件,以某矿250206上工作面为工程背景,借助弹性薄板理论对回采巷道在水平构造应力作用下底板冲击发生的原因进行了分析,建立了底板失稳破坏的力学模型,通过理论推导计算出了底板发生失稳破坏的临界载荷表达式,并给出了底板所受水平应力的计算公式,最后对底板冲击危险性系数进行了修正。Aiming at the problem that floor impact happened frequently in roadway under the action of tectonic stress of fold region,based on mechanical conditions occurring in the floor,reasons for the floor impact in roadway under the action of horizontal tectonic stress were analyzed by theory of elastic thin plate,mechanical model of unstable failure of floor was established,expression formula of critical load on unstable failure of floor was calculated by theoretical derivation,calculation formula of horizontal stress endured by floor was given and danger coefficient of floor burst was modified with the upper longwall（LW） 250206 in Yanbei colliery as the engineering background.

关 键 词：底板冲击 水平应力 力学模型 临界载荷 底板冲击危险性系数 

分 类 号：TD327.3[矿业工程—矿井建设]