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采用火灾动力学FDS软件对深埋地铁站台中部7.5MW火灾进行了模拟,通过改变楼梯口、扶梯口处空气幕的送风角度,分析深埋地铁火灾中,火源附近、楼梯口、扶梯口附近的温度场和速度场的分布规律,为保证人员在6分钟以上的安全疏散时间提供理论依据.结果表明,不同位置的扶梯、楼梯口处空气幕的送风角度对烟气的控制效果是不同的,60°送风效果较好.在站台发生火灾时,应智能控制空气幕的送风角度,可以有效的控制火灾烟气蔓延.
The Fire Dynamics FDS software was used to simulate the 7.5 MW fire in the middle of the deep subway station platform. By changing the air supply angle of the air curtain in the staircase and escalator, the fire in the deep subway, the fire source, the stairs, the escalator mouth Near the temperature field and the distribution of velocity field, to ensure that personnel in more than 6 minutes of safe evacuation time provide a theoretical basis.The results show that the escalator at different locations, stairway air curtain air supply angle of the flue gas control effect is Different, 60 ° air supply is better.When platform fire, should be intelligent control air curtain air supply point of view, can effectively control the spread of fire smoke.