多出入口城市公路隧道煙流控制及人員疏散模式研究
[Abstract]:In order to alleviate the pressure of urban traffic and improve the function of urban traffic, urban highway tunnel has been widely used in urban traffic construction. Urban highway tunnels have the characteristics of urban traffic, such as the number of entrances and exits, the traffic jams and the heavy traffic, etc., so the probability of fire, the scale of fire, the law of fire development, etc. Smoke flow control and evacuation mode are different from non-urban highway tunnels. Therefore, it is necessary to study the fire of multi-entrance urban highway tunnel. Based on Hangzhou Zizhi Tunnel, this paper systematically analyzes smoke flow control and evacuation mode of multi-entrance urban highway tunnel by theoretical analysis, numerical simulation, random simulation and so on. The research results are applied to the supporting engineering. The research work in this paper is mainly reflected in the following aspects: 1. Through the investigation and investigation of the urban highway tunnel fire accident, the characteristics of the city tunnel fire source are analyzed. Combined with theoretical calculation and numerical simulation, the ignition law of various types of vehicles in urban highway tunnel is proved. The random simulation method is used to consider the fire risk and fire frequency comprehensively. The scene of initial ignition fire of multiple entrances and exits of urban highway tunnel is determined. Then through numerical simulation of fire, the fire development law of highway tunnel with multiple entrances and exits is studied, and the development curve of fire scale in tunnel is obtained. 3. Based on the structural characteristics of multi-exit city tunnel with ramp, shaft and horizontal passage, The influence mechanism of different structures on smoke flow diffusion and evacuation is analyzed. The smoke flow control and evacuation mode of multi-entrance city tunnel and the corresponding control standard .4 are obtained, and the partition principle of smoke exhaust zone under the fire condition of multi-entrance urban highway tunnel is put forward. Based on the ventilation network theory, the fan configuration scheme and fan control scheme of fire ventilation system of relying engineering are obtained. The method of FDS fire numerical simulation and personnel evacuation simulation is used to solve the problem. The dispersal safety was evaluated. The research results of this paper have reference significance for disaster prevention and rescue design of multi-entrance city highway tunnel.
【學(xué)位授予單位】:西南交通大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:U458
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