Y型通风采空区瓦斯浓度的数值模拟研究

Numerical simulation research on methane concentration in mining goaf with Y type ventilation

针对回采工作面U型通风方式容易造成上隅角瓦斯浓度超限的问题,提出Y型通风方式,建立采空区的瓦斯流动控制方程和系统物理模型。并对采空区瓦斯浓度进行了数值模拟,模拟结果显示Y型通风方式能拦截采空区瓦斯进入工作面上隅角及回风巷,有效避免了工作面上隅角瓦斯的积聚。

For the working face U ventilation mode which is easy to cause the methane concentration in upper comer transfinite, put forward to Y type ventilation way, set up the methane flow control equation and system physical model in mining goal. Then the methane concentration is simulated and the simulation results show that the Y type ventilation can intercept methane in mining goaf into the upper comer on the working face and ventilation roadway, effectively avoid the work of upper comer methane accumulation.