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为研究大倾角综放工作面采空区自燃“三带”分布规律,首先建立了采空区流场的数学物理模型,然后利用Fluent对采空区自燃“三带”分布进行了模拟,并分析了不同风量对采空区自燃“三带”范围的影响。结果表明:采空区自燃“三带”具有三维空间分布特性;进、回风侧氧气浓度下降趋势不同,且进风侧自燃危险区域靠近采空区中后部,回风侧自燃危险区域紧靠工作面上隅角;单一改变风量大小对氧化带宽度的变化影响较小。
In order to study the distribution law of spontaneous combustion and “three belts” in the gob of fully mechanized caving mining face with large dip angle, the mathematic model of the flow field in goaf is established first, and then the distribution of spontaneous combustion “three bands The simulation and analysis of different air flow on the goaf spontaneous combustion ”three zone " range. The results show that the spontaneous combustion in the goaf has three-dimensional spatial distribution, and the decreasing trend of the oxygen concentration in the inlet and return air is different. The spontaneous combustion danger zone on the inlet side is close to the middle and back part of the goaf, The area is close to the upper corner of working face; the single change of air volume has little effect on the change of oxidation zone width.