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低透气性高瓦斯薄煤层回采时,利用煤层高压注水压裂,增加煤层透气性,使煤体中的瓦斯得到充分释放;并配以充足的风量,解决采煤工作面上隅角及回风瓦斯超限问题,以保证采煤工作面的安全回采。
Low gas permeability of high-pressure thin coal seam mining, the use of high-pressure water injection fracturing coal seam to increase permeability of the coal so that the coal gas is fully released; and with adequate air volume to solve the coal mining face corner and back to the wind Gas overrun problem, to ensure the safe mining face mining.