In order to enhance the gas drainage effect in a working face with low permeability and high concentration of gas, the new methane drainage technology is studied.
In order to enhance the gas drainage effect in a working face with low permeability and high concentration of gas, the new methane drainage technology is studied.
摘要为提高低透气性、高瓦斯煤层工作面的瓦斯预抽效果，对工作面瓦斯抽放新技术进行了研究。