近距离煤层下煤层回采巷道合理布置的研究

摘要

Takes 9#、10#close distance coal seam of layer spacing with an average of 5.32 m in Shanxi Lingshi Huayuan group co.,LTD as research object,through numerical simulation,analyzes the stress distribution of lower coal seam under the goaf after upper coal seam mining and the destructiveness of surrounding rock that lower coal seam roadway staggered arranges when different staggered distance.Ensures the reasonable position of staggered ar-rangement under coal seam roadway,it can provide a reference for similar coal seam minging.%以山西灵石华苑煤业有限公司层间距平均为5．32 m的9＃、10＃近距离煤层为研究对象，通过数值模拟，对上煤层回采后采空区下方下煤层应力分布及下煤层回采巷道内错布置不同错距时，围岩屈服破坏程度进行了分析，确定了下煤层回采巷道内错布置的合理位置，可为类似条件煤层开采提供借鉴。