Application of "High Gas Drainage Method" in Gas Management in High Gas Area of "Three Sofe" Special Thick Seam

When the coal face is mined in the high gas area of the special thick seam,the high gas drainage way is constructed.The gas in the mined-out area of the coal face is drained by the high gas drainage way.The gas quantity drained by wind is reduced.The safe and high effective production is realized.