文章摘要信息 关键词 ： 深井 煤巷 卸压钻孔 数值模拟 工业试验 [gap=1007]Keywords : deep mine；coal tunnel；destressing boreholes；numerical simulation；industrial test
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所得出的钻孔破坏半径的表达式可用于不同条件下计算瓦斯排放钻孔的有效排放半径和卸压钻孔的有效卸压半径。
Sequentially, the effective radius of gas extraction and the effective pressure-released radius of pressure-released borehole are calculated by the borehole destroying radius expressions.
通过扩大钻孔的直径，从而达到增加钻孔的煤层暴露面积和卸压范围，增大钻孔抽排瓦斯量，提高钻孔的抽排效果。
The enlargement of hole diameter increased the exposed area and pressure releasing range of bored coal seam, and raised gas drainage amount and discharging effect from holes.
本论文主要是针对远程下保护层开采条件下，对底抽巷上向穿层钻孔抽放远程卸压瓦斯技术进行了深入的研究。
This paper mainly researches on the technique of draining long distance pressure relief gas in bed plate tunnel under the circumstance of mining protective coal seam.
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