experimental study of gas relief from protected seam by gas drainage through crossing holes in upper airway of protective seam
保护层上风巷穿层钻孔抽采被保护层卸压瓦斯的试验研究
The research shows that long distance relief gas does not swarm into the working face in protective coal seam, but the permeability of protected coal seam increases thousands of times because of mining long distance nether protective coal seam.
研究表明:远距离下保护层开采后,远程卸压瓦斯基本上不会窜入保护层回采工作面,但被保护煤层的透气性系数得到数千倍的增大。
deformation rule of protected coal seam exploited by using the long-distance-lower protective seam method
远程下保护层开采被保护煤层变形规律研究
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