近年来,日益发展的城市轨道交通为促进城市经济和社会的快速发展起到了重要作用。但是,由于城市轨道交通,特别是城市地铁深埋地下,环境封闭,人员密集、复杂且流动性大,其通风排烟和人员疏散受到很大制约,一旦发生事故和突发事件,人员伤亡和财产损失巨大。因此,城市轨道交通的安 In recent years, the growing urban rail transit has played an important role in promoting the rapid development of urban economy and society. However, as the urban rail transit, especially the underground subway in the city, the environment is closed, the staff is intensive, the complex and the liquidity are large, its ventilation, smoke evacuation and personnel evacuation are greatly restricted. In the event of accidents and emergencies, casualties and Property loss is huge. Therefore, the safety of urban rail transit