仰斜开采覆岩应力分布及裂隙演化规律物理模拟试验  

Physical Simulation Experiment on Laws of Stress Distribution and Crack Evolutionary of Overburden Strata in Up-dip Mining

作　　者：李树刚[1] 李昊天[1] 丁洋[1] 赵鹏翔[1] 林海飞[1] 

机构地区：[1]西安科技大学能源学院,陕西西安710054

出　　处：《煤矿安全》2015年第2期25-27,31,共4页Safety in Coal Mines

基　　金：国家自然科学基金科学仪器基础研究专款资助项目(51327007);国家自然科学基金资助项目(51174157;51104118);陕西省自然科学基础研究计划资助项目(2011JQ7015)

摘　　要：为揭示仰斜开采过程中采场覆岩应力及裂隙演化规律,采用物理相似模拟试验进行了研究,得到了仰斜开采工作面底板支承压力沿推进方向的区域划分,支承压力峰值的变化,以及采场覆岩"三带"高度与卸压裂隙区宽度等随着工作面推进的变化规律。In order to reveal the laws of stress distribution and crack evolutionary of overburden in up-dip mining,we attempt to adopt the physical simulation experiment in the lab.Trough the experiment,we get the regional divisions of abutment distribution in the up-dip mining,the location and numerical value of abutment pressure peaks along the advancing direction,the laws that the height of the ＂three zones＂ in the overburden strata and the width of the crack area of pressure relief with the advancing of the working face.

关 键 词：仰斜开采 支承压力 覆岩“三带” 裂隙区 相似模拟 

分 类 号：TD325[矿业工程—矿井建设]