摘要
基于大同煤矿集团公司四老沟矿301盘区煤柱面的生产地质条件,综合运用FLAC3D数值计算、现场地质调研和理论分析的方法,从巷道围岩应力分布和表面位移两个方面分析了沿空掘巷围岩变形规律,确定合理的煤柱宽度为5 m。在此基础上对巷道支护参数进行了优化,达到了提高资源回收率的目的。
Based on production geology conditions of the coal pillar of 301 panel in Silaogou Mine of Datong Coal Mine Group, the methods of FLAC3 Dnumerical simulation, field geological investigation and theoretical analysis are integraetly used, surrounding rock deformation law of gob-side entry is analyzed from surrounding rock stress distribution of roadway and surface displacement, the 5 m reasonable coal pillar width is determined, on this basis,the parameters of roadway support are optimized, the purpose of raising resource recovery rate is achieved.
出处
《同煤科技》
2015年第2期6-9,共4页
Datong Coal Science & Technology
作者简介
李海清，现在大同煤矿集团有限责任公司生产技术部工作。
