保护层下倾斜煤层回采巷道布置位置的研究  

Layout Position Studying of Mining Roadway with Inclined Coal Seam under Protective Layers

作　　者：贺增源 

机构地区：[1]安徽理工大学能源与安全学院,安徽淮南232001

出　　处：《煤矿开采》2016年第5期40-43,共4页Coal Mining Technology

基　　金：国家自然科学基金(51374013);高等学校博士点基金(20133415110006);霍英东教育基金(121050);安徽省科技攻关计划项目(1604a0802107);高校优秀拔尖人才培育资助项目(gxbj ZD2016051);安徽高校科研平台创新团队建设项目;安徽省学术和技术带头人及后备人选学术科研活动资助经费

摘　　要：煤层开采引起的应力集中会造成底板的破坏,底板应力场及破坏深度是决定近距离煤层巷道位置的重要因素。结合谢一矿4671B4工作面回采巷道的具体地质力学条件,采用滑移线场理论计算确定了上保护层B6煤开采后的最大底板破坏深度和上层煤柱塑性区影响范围。使用FLAC3D数值模拟软件分析不同位置下巷道围岩的力学特征及机巷和风巷的最大位移量,对工程实践中采用内错式的布置方式的合理性进行验证。The floor could be destroyed by stress concentration that caused by coal seam mining,floor stress filed and destroyed depth were the main factors,which decided roadway position under contiguous seams,with the geological situation of mining roadway of4671B4 working face in Xieyi coal mine,the maximal destroyed depth and plastic influenced scope of upper coal pillar was determined by slip line field theory after upper protective layer B6 coal seam was mined. The mechanical characters of surrounding rock under different positions and the maximal displacement of air roadway were analyzed by software FLAC3 D,then the reasonable of internal misaligned arrangement was verified by practical in filed.

关 键 词：回采巷道 底板破坏深度 滑移线场理论 数值模拟 

分 类 号：TD263.1[矿业工程—矿井建设]