煤层倾角对采煤工作面Y型通风瓦斯治理效果影响研究

Study on effect of coal seam angle on gas control effect of Y type ventilation in coal mining face

为了得到煤层倾角对采煤工作面Y型通风系统瓦斯治理效果的影响,利用Fluent对煤层倾角分别为0°,25°,45°时的工作面压力分布、工作面风量分布、采空区瓦斯分布、上隅角瓦斯浓度进行数值模拟研究,并且分析其随煤层倾角的变化规律。分析结果表明:随着煤层倾角的增加,工作面两端压差、工作面向采空区的漏风量和上隅角瓦斯浓度逐渐升高,采空区瓦斯浓度逐渐降低。

In order to get influence of coal seam angle on gas control effect of Y type ventilation in coal mining face,the pressure distribution of working face,the air distribution of working face,the gas distribution in the goaf and the gas concentration at the upper corner were studied respectively when the dip angle of the coal seam was 0 degrees,25 degrees and 45 degrees respectively by using Fluent,and the law of variation with the dip angle of coal seam analyzed. The analysis showed that with the increase of dip angle of coal seam,the pressure difference at both ends of the working face,the leakage amount of the work facing the goaf and the gas concentration at the upper corner were gradually increased,and the gas concentration in the goaf gradually decreased.