5323 working face of Lvjiatuo Mining Company of Kailuan Group serving as example,the paper discussed the gas extraced technique on the working face with high density gas and low diathermancy.

• 以开滦(集团)吕家坨矿业公司5323工作面为例,探讨了高瓦斯低透气性工作面瓦斯抽放技术。