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防烟系统采用机械加压送风方式或自然通风方式,防止烟气进入疏散通道;排烟系统是采用机械排烟方式或自然通风方式,将烟气排至建筑物外。防排烟系统直接关系到地铁工程中乘客的人身及财产安全。本文结合实际工作,就地铁环控系统设计中遇到的一些防排烟问题进行分析总结,包括地下防火隔间的防排烟、火灾工况防排烟控制模式、防火阀设置原则、地下车站屏蔽门漏风量的计算及场段区间公路隧道的防排烟设计原则。
Anti-smoking system using mechanical or forced air supply or natural ventilation to prevent smoke into the evacuation channel; exhaust system is the use of mechanical exhaust or natural ventilation, the flue gas discharged to the outside of the building. Smoke control system is directly related to the personal and property safety of passengers in the subway project. Based on the practical work, this paper analyzes and summarizes some smoke control problems encountered in the design of subway environment control system, including smoke control and smoke exhaust control in underground fire protection booths, smoke control mode in fire condition, fire damper setting principle, underground station The calculation of the amount of air leakage in the screen door and the design principles of smoke and smoke prevention for highway tunnels in field sections.