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Subway fire has a greater risk, and it occupies a large proportion in the subway accidents. Through the analysis of the possibility of subway fire and combustible, the model based on the actual size of one certain railway station in Dalian is established. Several different fire conditions are considered in the model. Different fire numbers and different fire power sources are set in the different fire locations, just as the station, platform, and the train area. Fire temperature, smoke layer height, CO concentration and other fire parameters were analyzed considering the failure or work of the sprinkler system. The need time for the fire evacuation is analyzed in the two conditions. Also risk limits are compared to the scene of the fire parameter. The results show that the sprinkler system can reduce the temperature of the fire, and it is a little difficult to discharge the smoke from the top air outlet due to the rising part of the water droplets, the plume temperature and the velocity decrease, which hinders the smoke emission and accelerates the visibility.

A Comprehensive Study of Two Fire Conditions in a Subway Train Fire: Considering the Failure or Work of the Sprinkler System