隆安煤矿邻近煤层开采工作面煤柱尺寸确定  

Research on Size of Coal Pillars in Adjacent Coal Seam Mining Face in Long'an Colliery

作　　者：闫东 Yan Dong(Taishan Longan Coal Industry Co.,Ltd.,Shanxi Coal Transportation and Marketing Group,Xinzhou,Shanxi 034000)

机构地区：[1]山西煤炭运销集团泰山隆安煤业有限公司,山西忻州034000

出　　处：《江西煤炭科技》2021年第2期105-107,110,共4页Jiangxi Coal Science & Technology

摘　　要：为降低工作面掘进及回采期间巷道支护难度,减少巷道后期维护成本,提高工作面回采安全性,同时为了提高矿井煤炭资源回收率,结合隆安煤矿四采区11^(#)煤层地质情况,通过数值模拟分析和煤柱尺寸宽度理论计算相结合的方法,确定了11^(#)煤层开采留设煤柱的合理宽度为20 m。现场应用结果表明,工作面在开采过程中,巷道围岩受采动影响产生的变形量在可控范围之内,留设煤柱也处于较为稳定状态,达到了设计要求。In order to reduce the difficulty of roadway support during the excavation and stoping of the working face,reduce the final maintenance cost of the roadway,improve the safety mining of the working face,and at the same time improve the coal resource recovery rate of the mine,combined with the geological conditions of the 11^(#)coal seam in the fourth mining area of Long'an Colliery,it is determined that the reasonable width of the setting coal pillar for No.11 coal seam mining is 20 m based on numerical simulation analysis and theoretical calculation of coal pillar size and width.Field application results show that during the mining process of the working face,the deformation of the roadway surrounding rock affected by mining is within a controllable range,and the setting coal pillars are also in a relatively stable state,which meets the design requirements.

关 键 词：邻近煤层开采 煤柱 数值模拟 应力分布 围岩变形 

分 类 号：TD823.81[矿业工程—煤矿开采]