脉动通风消除上隅角瓦斯积聚的理论分析

Theoretical Analysis of Eliminating Gas Accumulation in Upper-Corner by Pulsed Ventilation

针对“U”型采煤工作面上隅角瓦斯积聚问题 ,建立了脉动通风作用下上隅角风流动力学极坐标方程及瓦斯传质方程 ,详细分析了脉动通风作用下上隅角瓦斯的传质运移过程 ,论述了瓦斯扩散传质机理 ,并通过现场试验验证了脉动通风解决上隅角瓦斯积聚是有效。

Aiming at the problem of gas accumulation in upper corner of U shape coal faces, the air flow dynamics equation and gas mass transmission equation under pulsed ventilation were set up. The transport process of gas was analyzed in detail, and the mechanism of gas diffusion and mass transmission in the upper corner of coal faces under pulsed ventilation was discussed. Field experiment has proved that the pulsed ventilation method is effective and feasible.