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根据五阳煤矿7802综放工作面的具体条件,总结分析出综放工作面回风上隅角瓦斯积聚的2个主要致因。针对回风上隅角风速很低及存在涡旋这一主要致因提出采用风障引风升压这一工作面瓦斯治理方法。运用计算流体动力学软件FLUENT对该方法治理工作面瓦斯的效果进行模拟,并采用对比分析的方法验证了该方法的有效性。
According to the specific conditions of 7802 fully mechanized coal caving face in Wuyang Coal Mine, two main causes of methane accumulation in the upper corner of return air in fully mechanized caving mining face are summarized and analyzed. In view of the low wind speed and vortex in the upper corner of the return air, the gas control method using wind induced draft and pressure increase is proposed. The computational fluid dynamics software FLUENT was used to simulate the effect of this method on gas in workface and the effectiveness of the method was verified by comparative analysis.