Study On Fire Flue Gas Flow And Safety Evacuation In Large Subway Stations

The subway has become an indispensable tool for modern transportation,and its social responsibility and value is very huge.Neither the government nor the citizens would like to see the subway accident happen.According to the literature,fire is one of the most important types of accidents in subway,and the most severe ones.Therefore,it is very important to ensure the safety evacuation of the personnel in the subway station in case of fire.In this paper,the research focuses on a large subway station,combining relevant information and specifications,and proposes corresponding fire fighting strategies for the public area of the metro station in excess of the regulation,then select the station hall and the platform as the fire scene,simulation software FDS was used to simulate the smoke environment of subway station from 0 to 20 minutes,and then confirme that the facilities of the subway station weather meet the requirements of safety evacuation in fire;ASET based on the simulation of Pathfinder software,according to the contrast,total evacuation time is shorter than dangerous arrival time(RSET),it is verified that this large subway station can achieve the expected fire safety performance target through fire control strategy.Finally,based on the simulation of smoke distribution and the weaknesses of the safety evacuation of the personnel,the author puts forward some suggestions about the safety evacuation optimization of subway station personnel,and hopes to provide ideas for the fire protection design and management of large metro stations in the future.