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水力切割技术在预抽煤巷条带瓦斯中的应用

煤炭科技(2014)

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Abstract
低透气性突出煤层钻孔瓦斯衰减快,穿层钻孔预抽效果较差,掘进过程中存在工作面突出危险性预测指标超标问题.通过在容光煤矿采用水力切割技术,增加煤层透气性,提高了瓦斯抽采量,消除了掘进工作面突出危险性预测超标,实现了安全掘进.更多还原
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