厚煤层巷道矿压显现规律研究  

Study on laws of strata behavoirs in thick coal seam roadway

作　　者：马智勇 Ma Zhiyong(China Coal Technology Engineering Group Chongqing Research Institute,Chongqing 400037,China)

机构地区：[1]中煤科工集团重庆研究院有限公司,重庆400037

出　　处：《能源与环保》2020年第8期178-182,191,共6页CHINA ENERGY AND ENVIRONMENTAL PROTECTION

基　　金：国家自然科学基金青年科学基金资助项目(50904033)。

摘　　要：针对厚煤层开采时矿压对巷道的影响的问题,从理论和实践上阐述位于厚煤层内的区段集中巷、采区上(下)山及大巷整个服务期间采动影响过程中的矿压显现规律和围岩变形,以及厚煤层巷道的维护技术。利用FLAC3D数值模拟软件,分别分析了采动条件下厚煤层区段集中平巷顶板压力规律以及采动条件下厚煤层区段集中平巷顶板位移规律。提出要掌握巷道的围岩性质及其对巷道维护的影响,合理确定护巷煤柱宽度,在邻近煤层开采中,采用上部煤层在厚煤层上方跨采,或者厚煤层巷道开掘之前上部煤层预先开采等卸压措施。从而避免了厚煤层开采过程中矿压对巷道的影响,保证了煤矿的安全高效回采。In view of the influence of mine pressure on roadway in thick coal seam mining,the strata behavior law,surrounding rock deformation and maintenance technology of thick coal seam roadway during the mining process in the thick coal seam were analyzed in theory and practice.The FLAC3 D numerical simulation software was used.The roof pressure law of the thick coal seams concentrated roadway in mining conditions and the roof displacement law of the concentrated roadway in thick coal seams are analyzed respectively under the mining conditions.The first is to grasp the surrounding rock property of the roadway and its influence on the roadway maintenance,reasonably determine the width of the coal pillar in the protection roadway,and adopt the upper coal seam to cross over the thick coal seam in the adjacent seam mining measures such as pre-mining of upper coal seam before thick coal seam roadway excavation,so as to avoid the influence of underground pressure on roadway in thick seam mining process,and ensure safe and efficient mining of coal mine.

关 键 词：厚煤层巷道 矿压规律 数值模拟 应力特征 位移特征 

分 类 号：TD32[矿业工程—矿井建设]