浅埋大采高煤层群开采覆岩结构及矿压特征分析  

Features analysis of overlying strata and mine pressure in shallow buried coal seams group mining with large cutting height

作　　者：黄克军[1,2] 黄庆享[1] 赵萌烨 廖敬龙 张元振 

机构地区：[1]西安科技大学能源学院,陕西西安710054 [2]陕西煤业化工技术研究院有限责任公司,陕西西安710065

出　　处：《煤炭工程》2017年第4期70-73,共4页Coal Engineering

基　　金：陕西省工业科技攻关项目(2016GY-183)

摘　　要：以神南矿区部分浅埋区域4-2和5-2两层大采高煤层开采为工程背景,通过物理相似模拟实验研究了上、下煤层重复采动时工作面覆岩的垮落特征及覆岩关键层结构,得出了浅埋煤层群起主要岩层控制的覆岩分别为直接顶关键层、下煤层有效关键层(组)、上煤层已扰动关键层,并分别对其结构特点进行分析。此外,还结合了该区域单一煤层及煤层群工作面矿压现场实测数据对比分析结果,总结出了较单一浅埋煤层开采,煤层群开采过程中周期来压步距相对较小,来压强度大的基本矿压特征,对该区域煤层的安全、高效回采具有重要的指导意义。There are two main high cutting mining coal seams of 4-2and 5-2coal seam in part of Shennan shallow coal seam area.Similar simulation test is carried to study the caving features of working face overlying strata and the key strata structure during repeated mining of upper and lower coal seams,it is found the main control stratum are the key strata of direct roof,the lower effective key stratum（group） and the upper disturbed key strata.Furthermore,the strata pressure results of single coal seam and coal seam group mining are compared,the features of smaller weighting interval and larger compressive strength coal seam are summarized,the coal seams group mining has smaller periodic weighting interval and stronger weighting intensity.

关 键 词：浅埋煤层群 覆岩结构 重复采动 矿压分析 

分 类 号：TD325[矿业工程—矿井建设]