后退式回采工作面下行通风技术的应用

Practice of Downriver Ventilation Technology in Retreat Simple Longwall

对下行通风时瓦斯涌出及下隅角瓦斯减少的原因进行论证,对上行风改为下行风应注意的问题进行了论证。

This paper discussed methane emission, the reasons for methane reduction in up comer, problems should be considered in the condition of change from normal ventilation into downriver ventilation.