Study of Simulation for Flow Field of Goaf at Working Face With Two Inlets and Two Outlets

摘要：

On the basis of the qualitative analysis and quantitative analysis of the spontaneous combustion in goaf, as well as numerical method of engineering thermophysics for the analysis and computation for porous media, CFD is used to simulate the flow field of goaf with the ventilation type of two inlets and two outlets in certain mine.The distribution law and variation trend of the gases in goaf are obtained, at the same time the process of spontaneous combustion in goaf is forecasted so as to prevent spontaneous combustion.The results show that a large area of oxidation phenomena appear in the air leakage area of goaf with the ventilation type of two inlets, and the criticality of spontaneous combustion increase seriously; the orthocenter of oxygen distribution is biased toward intake air side, and the shape of the oxidation zone of spontaneous combustion is asymmetric.

关键词： goaf spontaneous combustion CFD ventilation type of two inlets and two outlets simulation for flow field air leakage zones oxidation asymmetric

作者: Geng Xiaowei Zhang Yizheng

作者单位: College of Safety Science and Engineering,Liaoning Technical University,Fuxni,123000,China

会议类型: 国际会议

会议名称: the 4th International Symposium on Mine Safety (2012) 第四届国际矿山安全学术研讨会(2012)

会议地点: 阜新

会议语种:英文

页码: 138-141

在线出版日期: 2012-08-04（万方平台首次上网日期，不代表论文的发表时间）