复杂条件沿空掘巷煤柱留设方式研究  

Research on coal pillars retention method of goaf excavation under complex conditions

作　　者：孙殿宇 SUN Dianyu(Jinneng Holding Coal Industry Group Lu'an Coal Division,Changzhi 047500,China)

机构地区：[1]晋能控股煤业集团潞安煤炭事业部,山西长治047500

出　　处：《煤矿现代化》2022年第4期93-96,101,共5页Coal Mine Modernization

摘　　要：为研究同发东周窑矿8103工作面回采巷道复杂条件沿空掘巷煤柱留设宽度及围岩控制问题,采用理论分析、数值模拟及现场试验相结合的方式进行深入研究。理论计算得出8103工作面沿侧向应力降低区范围为5.32~8.87 m,综合考虑各项因素确定煤柱宽度的合理尺寸为6 m。巷道回采期间巷道围岩变形得到有效控制,表明煤柱宽度合理,保证了工作面正常掘进和回采。In order to study the width of coal pillar and surrounding rock control of gob-side roadway under complex conditions in Tongfa Dongzhouyao Mine,theoretical analysis,numerical simulation and field test were used to carry out in-depth research,the range of lateral stress reduction zone of 8103 working face was calculated to be 5.32~8.87m,the reasonable size of the coal pillar width was determined as 6m by considering various factors comprehensively.During the roadway mining,the deformation of the surrounding rock of the roadway is effectively controlled,indicating that the width of the coal pillar is reasonable and ensuring the normal driving and mining of the working face.

关 键 词：沿空掘巷 数值模拟 复杂条件 煤柱留设 

分 类 号：TD353[矿业工程—矿井建设]