地铁火灾比地面火灾具有更大的危险性。通过对地铁火灾的模拟可以重现火灾过程，研究火灾现象，分析火灾原因。通过FDS模拟，对比大邱市地铁火灾在有无强制通风烟控系统条件下，火灾现场的温度场和烟尘分布，研究讨论其对控制地铁火灾的重要作用。

Subway fire disaster is more hazardous than overground fire. Daegu underground railway fire disaster in Korea leads to a disastrous result. By means of fire simulation, recurrence of fire process, fire phenomenon and its reason could be studied. Based on FDS, the distribution of temperature and smoke with or without forced ventilated and smoke controlled system in Daegu subway fire are compared, and the effect on subway fire disaster control is also discussed in this paper.