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设定两种场景,利用大涡场模拟软件FDS对某双层岛式车站站台火灾进行数值模拟,探讨正压送风防烟在地铁车站内的应用。模拟获得双层岛式地铁车站火场烟气的蔓延过程以及站台通向站厅楼梯口处的气流分布,证明利用正压送风可以保证该处气流方向和流速,各参数满足规范要求,可以为人员疏散提供便利条件。
Two scenarios were set up. The large-eddy-field simulation software FDS was used to simulate the fire of platform of a double island station and the application of positive pressure air supply and smoke prevention in subway station was discussed. Simulation of the spread of flue gas in the double-decker metro station fire station and the distribution of air flow from the platform to the stairway of the station and hall prove that the air flow direction and velocity can be guaranteed by the positive pressure air supply. The parameters can meet the specifications Personnel evacuation to provide convenience.