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首页> 外文期刊>Mathematical Problems in Engineering >Computational Fluid Dynamics Simulation of Oxygen Seepage in Coal Mine Goaf with Gas Drainage
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Computational Fluid Dynamics Simulation of Oxygen Seepage in Coal Mine Goaf with Gas Drainage

机译：瓦斯抽放采空区氧气渗流的计算流体力学模拟。

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摘要

Mine fires mainly arise from spontaneous combustion of coal seams and are a global issue that has attracted increasing public attention. Particularly in china, the closure of coal workfaces because of spontaneous combustion has contributed to substantial economic loss. To reduce the occurrence of mine fires, the spontaneous coal combustion underground needs to be studied. In this paper, a computational fluid dynamics (CFD) model was developed for coal spontaneous combustion under goaf gas drainage conditions. The CFD model was used to simulate the distribution of oxygen in the goaf at the workface in a fully mechanized cave mine. The goaf was treated as an anisotropic medium, and the effects of methane drainage and oxygen consumption on spontaneous combustion were considered. The simulation results matched observational data from a field study, which indicates CFD simulation is suitable for research on the distribution of oxygen in coalmines. The results also indicated that near the workface spontaneous combustion was more likely to take place in the upper part of the goaf than near the bottom, while further from workface the risk of spontaneous combustion was greater in the lower part of the goaf. These results can be used to develop fire fighting approaches for coalmines.
机译：矿井火灾主要是煤层自燃引起的，是一个全球性问题，已引起越来越多的公众关注。特别是在中国，由于自燃而关闭煤炭工作面造成了巨大的经济损失。为了减少矿井火灾的发生，需要对地下自燃煤进行研究。本文针对采空区瓦斯抽放条件下的煤自燃建立了计算流体动力学（CFD）模型。 CFD模型用于模拟综采工作面采空区中采空区中氧气的分布。将采空区作为各向异性介质处理，并考虑了甲烷排放和耗氧量对自燃的影响。模拟结果与现场研究的观测数据相匹配，这表明CFD模拟适用于研究煤矿中氧气的分布。结果还表明，靠近工作面的自燃很可能发生在采空区的上部而不是底部附近，而距工作面越远，采空区的下部自燃的风险就越大。这些结果可用于开发煤矿的灭火方法。

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  • 来源
    《Mathematical Problems in Engineering》 |2015年第11期|723764.1-723764.9|共9页
  • 作者

    Shi Guo-Qing; Liu Mao-xi; Wang Yan-Ming; Wang Wen-Zheng; Wang De-Ming;

  • 作者单位

    China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Peoples R China.;

    China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Peoples R China.;

    Rutgers State Univ, Dept Mech & Aerosp Engn, Piscataway, NJ 08854 USA.;

    China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Peoples R China.;

    China Univ Min & Technol, Sch Safety Engn, Xuzhou 221116, Peoples R China.;

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