沿空掘巷煤柱的合理留设宽度
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摘要
为了最大程度地解决煤炭资源短缺的问题,通过理论分析计算得出采空区实体煤侧极限平衡区的范围,并应用"O-X"形破坏理论,得出沿空巷道位置和窄煤柱宽度,从而保证巷道煤柱承受较小载荷,利于巷道稳定,增加煤炭资源回收率,提高矿井效益。
In order to solve the problem of coal resource shortage to the greatest extent, the limit equilibrium zone of entity coal side in goaf is obtained by theoretical analysis and calculation, and the position of goaf along goaf and the width of narrow coal pillar are obtained by applying "O-X" failure theory, so as to ensure that the goaf pillar bears less load, is conducive to the stability of the roadway, increase the recovery rate of coal resources and improve the efficiency of the mine.
In order to solve the problem of coal resource shortage to the greatest extent, the limit equilibrium zone of entity coal side in goaf is obtained by theoretical analysis and calculation, and the position of goaf along goaf and the width of narrow coal pillar are obtained by applying "O-X" failure theory, so as to ensure that the goaf pillar bears less load, is conducive to the stability of the roadway, increase the recovery rate of coal resources and improve the efficiency of the mine.
引文
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[2]王志强,王昊昊,石磊,等.高强度超长推进距离工作面双巷布置沿空掘巷机理[J].煤炭学报,2017,42(S2):302-310.
[3]侯朝炯.深部巷道围岩控制的关键技术研究[J].中国矿业大学学报,2017,46(05):970-978.
[4]张广超,何富连,来永辉,等.高强度开采综放工作面区段煤柱合理宽度与控制技术[J].煤炭学报,2016,41(09):2188-2194.