| 水力压裂增透范围及其在瓦斯抽采中的应用 |
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| 引用本文： | 章冰悬.水力压裂增透范围及其在瓦斯抽采中的应用[J].中州煤炭,2018,0(12):35-37. |
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| 作者姓名： | 章冰悬 |
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| 作者单位： | （山煤集团霍尔辛赫煤业公司，山西 长治 046600） |
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| 摘 要： | 为了提高瓦斯抽采率及增加煤层透气性，研究了水力压裂增透范围以及其在瓦斯抽采中的应用，分析了瓦斯渗透率与含水率关系、煤层应力—渗流规律，采用数值模拟软件，研究了孔隙水压力分布、孔隙最大主应力、不同测压系数下最大主应力变化、宏观裂隙长度变化规律以及渗流量、空隙水压、最大主应力的变化曲线。应用实践表明:当采用水力压裂技术时，抽采效果提高了3~5倍。研究可为类似工程条件的瓦斯抽采提供了借鉴。
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| 关 键 词： | 水力压裂 增透范围 瓦斯抽采 渗流规律 数值模拟 含水率 |
Range of hydraulic fracturing and permeability increasing and its application in gas drainage |
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| Zhang Bingxuan. Range of hydraulic fracturing and permeability increasing and its application in gas drainage[J].Zhongzhou Coal,2018,0(12):35-37. |
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| Authors: | Zhang Bingxuan |
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| Affiliation: | （Huoerxinhe Coal Industry Company of Shanxi Coal Group，Changzhi 046600，China） |
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| Abstract: | In order to improve gas drainage rate and increase coal seam permeability，the range of hydraulic fracturing and its application in gas drainage were studied.The relationship between gas permeability and water content and coal seam stress-seepage law were analyzed.By using numerical simulation software，the distribution of pore water pressure，the maximum principal stress of pores，the variation of maximum principal stress under different pressure measurement coefficients，the variation of macroscopic crack length，and the curves of seepage flow，void water pressure and maximum principal stress were studied.Practice has showed that，when using hydraulic fracturing technology，the extraction effect is improved by 3 to 5 times.The study has provided a reference for gas drainage in similar engineering conditions. |
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| Keywords: | ,hydraulic fracturing, enhanced range, gas drainage, seepage law, numerical simulation, rate of water content |
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