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安全开采高瓦斯煤层净化煤尘的综合机械化工作面的高效生产,靠的是增大截深宽度到1.4m。采出大块煤达到瓦斯安全和煤尘净化工作面空气。这种采煤工艺范围:缓斜煤层18°以下,薄
Safe mining of high-gas coal seam coal dust comprehensive mechanized face efficient production, by increasing the cut-off width to 1.4m. Mining large blocks of coal to achieve gas safety and coal dust clean the face of the air. This mining process range: gently inclined coal seam below 18 °, thin