近距离倾斜煤层巷道布置研究  

Study of Roadway Layout in Short Distance and Inclined Coal Seam

作　　者：邓鹏海 曹鹏[1] 赵海啸[1] 游家梁 李朋[1] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083

出　　处：《煤炭技术》2014年第7期130-133,共4页Coal Technology

摘　　要：某矿的具体地质条件表明近距离倾斜煤层下部回采巷道采用重叠式布置时,矿压显现剧烈。现场监测表明其松动圈大小约为3 m,两帮及顶底板相对移近量均超过50 cm,巷道维护困难。采用数值模拟表明上部煤层回采时所留煤柱对下部两侧倾斜煤层的影响范围是不一致的,上区段煤层的运输顺槽应至少内错2 m,下区段煤层的回风顺槽应至少内错8 m才能避开上部煤柱集中应力的影响,理论计算结果与之基本吻合。The strata behaviors is acute when the roadway with the overlapping seams close arrangement in short distance and inclined coal seam based on the specific geological conditions.The loose circle distance is about 3 m,and the roof and side displacement is above 50 cm,so the supporting is difficult.The sphere of influence of the coal pillar is diffident between the horizontal and inclined coal seam from the method of numerical modeling,the wrong distance of conveying tunnel of the first face is 2 m,and the distance of air return tunnel of the second face is 8 m,so the tunnel will out of the sphere of influence of the coal pillar,the theoretical calculation coincides that.

关 键 词：近距离倾斜煤层 巷道布置 集中应力 UDEC数值模拟 支承压力分布 

分 类 号：TD82[矿业工程—煤矿开采]