摘要
为提高煤炭回收率与解决工作面采掘接替紧张的问题,以余吾煤业回采巷道为研究对象,采用极限平衡理论和数值模拟方法,分析了上区段工作面回采后宽煤柱内垂直应力的分布规律,对在宽煤柱内沿空掘巷的窄煤柱合理宽度进行研究,确定了在宽煤柱中沿空掘巷的窄煤柱合理宽度为5.0 m。
In order to improve the coal recovery rate and solve the tension problem of excavation replacement in working face, taking the mining roadway in Tunliu Coal Mine as the research object, the limit equilibrium theory and numerical simulation method was applied to analyze the distribution laws of the vertical stress in the wide coal pillar after mining upper section working face, then it studied the rational width of the narrow coal pillar in the wide coal pillar for the gob - side entry driving, and the relational width of the narrow coal pillar was determined as 5 m.
出处
《煤矿安全》
CAS
北大核心
2014年第1期122-124,128,共4页
Safety in Coal Mines
关键词
沿空掘巷
极限平衡理论
数值模拟
窄煤柱宽度
宽煤柱
gob- side entry driving
limit equilibrium theory
numerical simulation
width of narrow pillar
wide coal pillar
