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孔口负压对抽采效果的影响规律研究

Jian-yuan LIU,Jun LIU,Pan CHEN

Coal Technology（2016）

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Abstract
为了研究抽采钻孔孔口负压与抽采效果的相关性,从煤层瓦斯流动特性出发,采用Comsol软件模拟和现场验证相结合的方法进行研究.研究结果表明:当抽采时间一定时,随着抽采负压增高,起初瓦斯抽采效果增加显著,但随后抽采负压作用逐渐减缓,抽采效果增加幅度越来越小.最终确定九里山矿合理孔口负压为30～34 kPa.
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