摘要
刘家沟矿的初步试验表明：对瓦斯压力高、煤质极松软和透气性极低的严重突出煤层进行预抽瓦斯防突是可行的。
Preliminary trials in Liujiagou Mine showed that it was available to prevevt outburst from occurring by gas predrainage in coal seams having high risk of outburst with high gas pressure,very soft nature of coal and very low permeability for gas,but the predrainage rate must be greater than that in ordinary outburst seams so as to attain the goal of outburst prevention.
