Study On Optimal Design Of Safety Evacuation In Metro Station

In recent years,with the continuous progress of national urbanization construction,the number of urban population in our country has increased rapidly,the ground traffic pressure has been increasing,and the urban traffic resources become more and more tense.Because of its special operating environment,the subway does not occupy any ground transportation resources,and can effectively avoid the traffic congestion caused by ground travel.Therefore,the subway traffic mode is more and more popular.But at the same time,due to the characteristics of subway structure,has the function of closed underground space,complex traffic and concentrated,resulting in the event of fire,explosion,power outages and other emergencies,will give the station personnel safety evacuation brought great difficulties.At present,China has opened 31 City Metro subway construction and put into operation,the speed of development is much higher than that of western developed countries,but compared with the high speed and the construction of subway,subway safety management capability in China is inferior by comparison Metro emergency situations,so how to achieve rapid and efficient personnel safety evacuation has become a research hotspot in the subway safety.This paper firstly introduces the development status at home and abroad as well as on the subway,subway accident types at home and abroad in recent years were analyzed,and put forward the necessity and importance of safety evacuation of the construction and development present situation of Xi'an subway.Then introduces the subway safety evacuation research,subway emergency evacuation,the type and characteristics of theory and the Metro Emergency staff characteristics,and according to the particularity of the subway safety evacuation and evacuation of the applicability of the theory,selects the improved ant colony algorithm and Pathfinder simulation model for evacuation route optimization and space station design optimization research.The third chapter focuses on the related parameters of evacuation theory and simulation model,and collects and analyzes the basic data of passengers in Xi'an subway during the holidays.Finally,an improved ant colony algorithm and Pathfinder evacuation software are used to simulate the evacuation of passengers,and the optimal evacuation path of each exit is obtained,and the design optimization scheme of subway station is proposed.