| 煤层瓦斯合理预抽期的确定方法探讨 |
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| 引用本文： | 李钢.煤层瓦斯合理预抽期的确定方法探讨[J].煤矿安全,2012,43(4):118-120. |
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| 作者姓名： | 李钢 |
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| 作者单位： | 国投煤炭有限公司,北京,100013 |
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| 基金项目： | 国家重点基础研究发展计划资助项目，“大型油气田及煤层气开发”科技重大专项资助项目，煤炭科学研究总院青年创新基金资助项目 |
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| 摘 要： | 为了合理规划煤层瓦斯的预抽时间,基于煤层瓦斯渗流理论,探讨了合理预抽期的确定方法,建立了抽采钻孔周围煤体的瓦斯流动方程,利用MATLAB编制了解算程序。在杜儿坪矿8#煤层回采工作面进行了应用。结果表明:在同样的预抽时间内,钻孔间距越小,煤层瓦斯预抽率越大。
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| 关 键 词： | 瓦斯预抽 瓦斯渗流 瓦斯流动方程 合理预抽期 |
Discussion on Determination Method of Coal Seam Gas Rational Pre-drainage Period |
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| LI Gang.Discussion on Determination Method of Coal Seam Gas Rational Pre-drainage Period[J].Safety in Coal Mines,2012,43(4):118-120. |
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| Authors: | LI Gang |
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| Affiliation: | LI Gang(State Development and Investment CORP,Beijing 100013,China) |
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| Abstract: | In order to plan pre-draining period of coal gas reasonably,based on gas seepage theory,the determination method of rational pre-drainage period is discussed.The gas flow equation of coal body which around the drainage holes is built up,and the solver with MATLAB is work out.The solver is applied on the workface of No.8 coal seam in Duerping mine.The results show that with the same pre-drainage period,the smaller drills space is,the greater gas pre-draining rate is. |
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| Keywords: | gas pre-draining gas seepage gas flow equation rational pre-drainage period |
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