高抽巷在开采下保护层矿井中的应用

Application of Highly-located Drainage Roadway in Downward Protected Coal Seam Mining

针对开采下保护层的正珠矿井在瓦斯治理及防治煤与瓦斯突出方面的问题,提出了利用高抽巷"拦截"上邻近层卸压瓦斯,同时在高抽巷内布置上向穿层钻孔抽采被保护层,以满足进一步解放被保护层的需要,实现"一巷多用"。

Based on the prevention and treatment problems of coal and gas outburst during the downward protected coal seam mining in Zhengzhu coal mine,the method of highly-located drainage roadway was offered to drawing the gas with pressure relief.At the same time,long drill holes through the seams were used to drawing the gas in protected coal seams.The function of highly-located drainage roadway was improved in large.