一、引言矿井巷道中,发生火灾时,热烟流由于它的热传递到围岩,随着它向前移动,而逐渐地冷却。由于温度不同,流体密度要发生变化,这种变化将产生以下影响:第一、巷道通风阻力发生变化,通风流量也将发生变化。第二、在垂直和倾斜巷道中,空气动力驱动载荷将出现,通风中能够产生大量的能量。 I. INTRODUCTION In mine tunnels, in the event of a fire, hot smoke flows to the surrounding rock due to its heat and gradually cools as it moves forward. Due to the different temperature, fluid density to be changed, this change will have the following effects: First, the alley ventilation resistance changes, the ventilation flow will also change. Second, in vertical and sloping tunnels, aerodynamic drive loads will occur and a large amount of energy will be generated in ventilation.