| 综合水力化增透措施在豫西“三软”煤层的工程应用探讨 |
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| 引用本文： | 李磊.综合水力化增透措施在豫西“三软”煤层的工程应用探讨[J].中国煤炭,2019(1):137-142. |
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| 作者姓名： | 李磊 |
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| 作者单位： | 中煤科工集团重庆研究院有限公司;国家煤矿安全技术工程研究中心 |
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| 摘 要： | 针对豫西"三软"煤层水力冲孔增透后瓦斯抽放浓度及流量衰减快的问题,采用水力压裂、水力扩孔综合增透措施,通过瓦斯涌出量、作用半径、抽采量对比,研究了综合水力化措施的应用效果。结果表明,综合水力化措施能有效解决防突、增加煤层透气性及煤层瓦斯涌出量,水力压裂半径达到20.0～25.0m,水力扩孔影响半径达到6m以上;水力扩孔后钻孔抽采浓度较普通钻孔增加4～7倍,流量衰减延长3～5倍。
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| 关 键 词： | 水力化措施 煤层透气性 瓦斯抽放浓度 流量衰减 |
Discussion on engineering application of comprehensive hydraulic permeability-improvement measures in soft coal seam with soft roof and floor in western Henan province |
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| Li Lei.Discussion on engineering application of comprehensive hydraulic permeability-improvement measures in soft coal seam with soft roof and floor in western Henan province[J].China Coal,2019(1):137-142. |
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| Authors: | Li Lei |
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| Affiliation: | (China Coal Technology Engineering Group Chongqing Research Institute,Shapingba,Chongqing 400037,China;National Coal Mine Safety Technical Engineering Research Center,Shapingba,Chongqing 400037,China) |
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| Abstract: | Li Lei(China Coal Technology Engineering Group Chongqing Research Institute,Shapingba,Chongqing 400037,China;National Coal Mine Safety Technical Engineering Research Center,Shapingba,Chongqing 400037,China) |
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| Keywords: | hydraulic measures coal seam permeability gas drainage concentration gas flow attenuation |
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