| With the accelerated process of urbanization,more and more cities begin to build the subway in order to achieve the purpose of easing traffic pressure.Subway bring us convenience,at the same time,the potential danger should also get enough attention,especially fire in the subway tunnel,it`s easy to cause casualty accident.The subway tunnel fire is a serious threat to people’s life and property safety.The existing research on the subway tunnel fire is aimed at the no-slope tunnel,and the tunnel is short.In fact,affected by the geographical environment and other factors,the slope of the subway tunnel often exists.When fire occurs,the presence of the slope will have a significant impact on the spread of smoke.When the tunnel is long and has a large amount of traffic,will be very vulnerable to a car front train has not pulled out of the tunnel and a train has entered the tunnel,the piston wind will affect the spread of fire smoke.Therefore,this article will be aimed at the long subway tunnel with slope,study the different smoke exhaust mode in the case of fire,and analyze the effect of different smoke exhaust mode,in order to get a reasonable response.This paper is based on the similarity theory to build a 1:10 scale model experiment.If a fire occurred in the subway train,the train was forced to call in the middle of the tunnel for emergency evacuation of personnel.The ceiling temperature,eye features reflect the exhaust effect in the tunnel at the height of temperature and CO concentration were measured experimentally.Using FDS software to simulate the fire and smoke exhaust effect under the same conditions.By comparing the experimental data with the simulation results,the correctness of the simulation model and the reliability of the simulation results are demonstrated.Simulated with FDS simulationsoftware.In the case of the slope of the tunnel,in the case of the vehicle and the vehicle exhaust mode and exhaust port open mode for comparative analysis. |
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