地铁车站的火灾烟气控制设计

分析大型地铁车站空间、功能特点，从火灾荷载、人员密度、烟气蔓延特性、防排烟系统设计难度等方面入手，以某大型地铁站为例，利用实地烟热试验对站厅层和站台层的防排烟设计进行了研究，分析了试验项目、评价指标和测量指标。结果表明，对于复杂的地铁车站，通过优化灭火设施和防排烟系统，科学合理划分防烟分区，对重点区域进行防火分隔，严格控制地铁车站公共区域可燃物量，可有效控制火灾和烟气的发展蔓延，确保人员安全疏散的时间要求。

Fire smoke control design of subway station

Based on the analysis of the space and function characteristics of large-scale subway station, starting from the fire load, personnel density, smoke spread characteristics, and the design difficulty of smoke control and exhaust system, taking a large- scale station as an example, the smoke control and exhaust design of station hall floor and platform floor is studied by field smoke heat test, and the test items, evaluation indexes and measurement indexes are analyzed. The results show that for the complex subway station, by optimizing the fire- fighting facilities and smoke control system, scientifically and reasonably dividing the smoke control zones, separating the key areas for fire prevention, and strictly controlling the combustibles in the public areas of the subway station, the development and spread of the fire and smoke can be effectively controlled to ensure the time requirements for the safe evacuation.