脉冲通风法治理“U”型工作面上隅角瓦斯积聚的理论及技术探讨

Study on Theory and Technology of Controlling the Upper Corner Gas Accumulation in U-Shaped Working Face by Pulse Ventilation

针对生产现场出现的“U”型采煤工作面上隅角瓦斯积聚问题 ,科学地分析了其形成的原因及目前解决上隅角瓦斯积聚的常用方法 ,提出了旋转脉冲法解决此问题的新途径 ,并进行了详细的理论分析。通过现场实验 ,验证了用旋转脉冲法解决上隅角瓦斯积聚是有效的、可行的。

Aiming at the problem of upper corner gas accumulation in the U shaped working face in the field of coal mining, the cause of formation and general countermeasures are analyzed. A new method, the rotary pulse ventilation, is put forward. The theoretical analysis is made in detail. Through field experiment, it is proved that the method is feasible and efficient.