采用优化后的方法可以提高瓦斯抽放效果，减少钻孔数量从而节省施工投入。
It can improve gas suction effect, reduce drilling hole amount and save construction investment.
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.
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.
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