顶板瓦斯高抽巷的抽采效果与抽放负压直接相关。
The gas extraction effects is related to negative pressure of suction.
介绍了高瓦斯采煤工作面采用高抽巷抽放、尾抽巷抽放等专用巷道瓦斯抽放技术，解决了工作面初采期间的瓦斯问题。
Introduces the roadway gas drained technology for high gas mining face, it has resolved the gas control problems during primary mining face.
介绍了高瓦斯采煤工作面采用高抽巷抽放、尾抽巷抽放等专用巷道瓦斯抽放技术，解决了工作面初采期间的瓦斯问题。
Introduces the roadway gas drained technology for high gas mining face, it has resolved the gas control problems during primary mining face.
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