低透气性突出煤层群开采层序论证

Demonstration of mining sequence of outburst coal seam group with low permeability

由于福泉煤矿山区低透气性突出煤层群开采瓦斯治理难度大,开采保护层是首选的区域防突措施。通过分析煤层赋存情况、瓦斯压力、煤的坚固性系数、瓦斯放散初速度及煤的破坏类型,结合保护层保护范围及保护层开采技术条件,综合论证煤层群2号、3号、6号、7号煤层开采层序。结果表明,福泉煤矿调整采掘部署,首采6号煤层,对于矿井的瓦斯治理及安全生产具有重要意义。

It is difficult to control the gas in the low permeability and outburst coal seams in Fuquan Coal Mine.The mining protective layer is the preferred regional defense prevention measure.Through the analysis on coal seam occurrence,gas pressure,coal firmness coefficient,gas release initial velocity and coal failure type, according to the protective layer protection scope and protective layer mining technical conditions,mining sequence of coal seam group No.2,No.3,No.6,and No.7 coal seam was comprehensively demonstrated.The results showed that,it should adjust the mining and driving plan in Fuquan Coal Mine,and the first mining of No.6 coal seam in Fuquan Coal Mine is of great significance for the gas control and safe production of the mine.