近距离煤层群开采在不同宽度煤柱中的能量分布  

Energy Distribution of Coal Pillars with Different-width in Mining Close Coal Seams

作　　者：姜鹏飞[1] 林健[1] 张剑[1] 刘勇[1] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013

出　　处：《煤矿开采》2011年第1期52-54,共3页Coal Mining Technology

基　　金：国家科技支撑计划项目(2008BAB36B07);天地科技股份有限公司科技发展基金(青年技术创新):基于地应力测量的煤矿区域应力的反演计算(TZ-JJ-09-KC-3);天地科技股份有限公司研发项目(TZ-GY-2010-KC-6)

摘　　要：以汾西矿区近距离煤层群开采为背景,采用FLAC3D有限差分程序计算分析了煤层回采在不同宽度煤柱条件下顶底板煤岩体中的能量分布情况。研究结果表明,煤柱内部及下部煤层中能量集中程度大于岩层中能量集中程度;随着煤柱宽度的增加,煤柱及底板煤岩体能量集中系数逐渐减小,但能量分布范围增大;煤柱宽度对煤柱内部及下部煤岩体能量分布均匀程度有较大影响。研究成果在汾西矿区柳湾煤矿得到了现场验证和应用。Based on mining close coal-seams of Fenxi mining area,energy distribution of coal and rock under different pillar width in mining was analyzed by applying FLAC3D.Results showed that energy concentration degree of inner and below of coal pillar was larger than that of rock.With coal pillar width increasing,energy concentration coefficient of coal pillar and floor decreased gradually,but energy distribution range increased.Coal pillar width would influence even degree of energy distribution in coal pillar and below coal and rock body.The results were proved and applied in Liuwan Colliery of Fenxi mining area.

关 键 词：近距离煤层群 能量集中 均匀程度 数值模拟 

分 类 号：TD822.3[矿业工程—煤矿开采]