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采用顶板岩层水平长钻孔抽放邻近层和采空区瓦斯是一项新技术 ,研究了该技术的关键参数之一 ,即抽放钻孔的合理布孔层位 ;综合运用矿山压力和岩层移动理论、有限元数值分析方法以及瓦斯越流理论 ,对顶板岩层瓦斯抽放水平长钻孔合理布孔层位进行了系统优化确定。
Using horizontal long holes in roof rock strata to drain adjacent layers and goaf gas is a new technology, one of the key parameters of this technology is studied, that is, a reasonable hole level of drilled holes; comprehensively using mine pressure and rock strata Motion theory, finite element numerical analysis method and the theory of gas flow, the rational distribution of holes in horizontal long borehole of gas drainage in roof rock stratum is systematically optimized and determined.