中文摘要：

地铁换乘站防排烟系统性能是保证车站安全以及地铁网络化安全运营的关键因素。本文分析了换乘站火灾烟气扩散及控制要求的特殊性,结合换乘站内部结构特征和国内外相关规范的内容,探讨了换乘站防排烟系统的设计和运行的技术难点,指出了换乘站火灾场景设计以及多因素耦合烟气扩散规律是未来开展换乘站防排烟系统研究的重点方向。

英文摘要：

The performance of smoke control system of subway interchange station is a key factor to ensure the safety of subway stations and operation of subway network. The particularities of smoke propagation and control in subway interchange station are analyzed. Combined with the internal structure characteristic and the current design code of subway,the fire smoke spread and control requirements are analyzed. The technical difficulties in the design and operation of the interchange station smoke control system are also discussed. It points out that the design of fire scenarios and smoke propagation law with couple of multi-factor are key directions of future research on smoke control system of subway interchange station.