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针对急倾斜煤层群倾角大造成的瓦斯防治困难问题,基于涌山矿急倾斜煤层群保护层开采地质条件,通过实测分析下保护层开采卸压效果,提出了在工作面回风巷施工顶板钻场采用高冒孔抽放和采空区预埋管抽放相结合方式抽放采空区瓦斯。
Aiming at the difficulty of gas prevention and control caused by large dip angle of steep coal seams, based on the geological conditions for the mining of the protective coal seam group in Yongdingshan coal mine, the effect of pressure relief on the protective layer mining was analyzed. Field using high-flue gas drainage and goaf pre-buried pipe drainage combined with the drainage of goaf gas.