| 钻孔周围煤体中瓦斯流动模型的理论研究 |
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| 引用本文： | 江丙友,林柏泉,朱传杰,沈春明,姚倩.钻孔周围煤体中瓦斯流动模型的理论研究[J].煤矿安全,2011(7):4-7. |
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| 作者姓名： | 江丙友 林柏泉 朱传杰 沈春明 姚倩 |
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| 作者单位： | 中国矿业大学安全工程学院;中国矿业大学煤炭资源与安全开采国家重点实验室; |
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| 基金项目： | 国家重点基础研究发展计划(973计划)资助项目(2011CB201205); 爆炸科学与技术国家重点实验室开放基金研究课题资助项目(KFJJ10-19M) |
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| 摘 要： | 为了对钻孔周围煤体中瓦斯流动情况进行研究,基于一定的假设建立了毛细管瓦斯流动的简化模型。根据流体力学、渗流力学及高等数学相关知识推导出毛细管瓦斯流动的运动微分方程,计算得出了毛细管的瓦斯流动流量,同时得到了煤层渗透率与毛细管直径之间的定量关系,建立了毛细管瓦斯流动理论与煤层渗透性之间的联系。在此基础上,通过进一步的简化最终得到了任意时刻钻孔瓦斯总流量的理论计算公式。
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| 关 键 词： | 钻孔 瓦斯流动 毛细管 流量 |
Theoretical Study on Gas Flowing Model in Coal around Drilling |
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| JIANG Bing-you,LIN Bai-quan,ZHU Chuan-jie,SHEN Chun-ming,YAO Qian.Theoretical Study on Gas Flowing Model in Coal around Drilling[J].Safety in Coal Mines,2011(7):4-7. |
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| Authors: | JIANG Bing-you LIN Bai-quan ZHU Chuan-jie SHEN Chun-ming YAO Qian |
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| Affiliation: | JIANG Bing-you1,2,LIN Bai-quan1,ZHU Chuan-jie1,SHEN Chun-ming1,YAO Qian1,2(1.School of Safety Engineering,China University of Mining & Technology,Xuzhou 221116,China,2.State Key Laboratory of Coal Resources and Safe Mining,Xuzhou 221008,China) |
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| Abstract: | In order to study the gas flowing situation in coal around drilling,a simplified model of capillary gas flow was established based on certain assumptions.According to fluid mechanics,seepage mechanics and some related knowledge of higher mathematics,the motion differential equations of capillary gas flow are derived and the flow quantity of capillary gas flow is calculated.Further more,the quantitative relationship between coal seam permeability and capillary diameter is obtained,and the relationship betwee... |
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| Keywords: | drilling gas flow capillary flow |
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