缓倾斜厚煤层沿空掘巷围岩变形规律数值计算分析  

Numerical calculation and analysis of surrounding rock deformation law of roadway excavation along goaf in gently inclined thick coal seam

作　　者：乔亮 QIAO Liang(Gongwusu Coal Mine,Chinal Energy Group Wuhai Energy Company,Wuhai 016030,China)

机构地区：[1]国家能源集团乌海能源公司公乌素煤矿,内蒙古乌海016030

出　　处：《煤炭科技》2021年第5期46-50,共5页Coal Science & Technology Magazine

摘　　要：为提高煤炭资源采出率,以乌海能源某煤矿011602工作面回风巷为例,采用数值模拟和工业性试验相结合的方法,分析了011601工作面回采时的侧向支承应力分布,对不同宽度煤柱下的巷道围岩变形和煤柱内应力峰值进行了研究。结果表明当煤柱宽度为5 m时较为合理,并提出了巷道控制技术。工业性实践表明,该技术有效控制了巷道围岩变形。In order to improve the recovery rate of coal resources,taking the 011602 working face of a coal mine in Wuhai Energy as an example,adopt the method of combining the numerical simulation and industrial test,the 011601 mining face of the lateral bearing stress distribution was analysed,and on the deformation of roadway surrounding rock under different coal pillar width and peak stress in coal pillar were studied.The results show that it is more reasonable when the coal pillar width is 5 m,and the roadway control technology was proposed.The industrial practice showed that this technique can effectively control the deformation of roadway surrounding rock.

关 键 词：沿空掘巷 留小煤柱 数值模拟 围岩控制 

分 类 号：TD325.1[矿业工程—矿井建设]