贵州省小型煤矿瓦斯抽放与利用现状

Present Situation of Gas Drainage and Gas Usage in Small Coal Mine in Guizhou Province

贵州省煤层赋存条件复杂,煤层透气性系数差,瓦斯抽放难度大。分析了贵州省小型煤矿瓦斯抽放及利用现状,指出了瓦斯抽放存在的问题,提出了提高小型煤矿瓦斯抽放和利用率的方法,对贵州省煤矿瓦斯抽放具有指导意义。

Due to complicated occurrence conditions in coal layer,the coal layer＇s gas permeability coefficient is poor and gas drainage is difficult in Guizhou province.The author analyzed gas drainage and usage situation in small collieries in Guizhou,pointed out the existing problems of gas drainage and proposed some methods to improve gas drainage and utilization ratio in small collieries,which had guidance for gas drainage in collieries of Guizhou.