Research Of Personnel Fire Evacuation In Extra-Long Tunnel Of High Speed Railway

More and more high-speed railway tunnels have been putting into use, or are under construction or planing to be builded, and long or extra-long tunnels are also increasingly common. Tunnel fire has the characteristics of burning fast, easy to flashover, extremely low visibility and high temperature, filling with dense smoke and noxious gas. Fire safety of extra-long tunnel has increasingly become the focus of attention. Through surveying of composition of high-speed trains passenger and evacuation psychological and behavioral, carrying out evacuation tests and numerical simulation of the train and tunnel cross-channel, the paper shows a series of findings. The main work of the paper are as follows:(1)According to high-speed train's key performance impacting evacuation mode selection, analysed the feasibility and situation, process of continuing running and parking evacuation model. Given the model selection of high-speed train under the cross influence of speed, braking ability, tractive performance, location, fire coach.(2)Through investigation and study, gotten the composition of passengers in high-speed train, evacuation behavior and psychological characteristics when train in emergency and passengers awareness of fire control facilities in high-speed railway and the main influencing factor of the high-speed train personnel evacuation.(3)Through carrying out EMU and ordinary train evacuation experiment, personnel access rate of connected aisle testing, gotten the EMU carriages and trains personnel evacuation time, get evacuation time, personnel pass rate and other key parameters of evacuating through connected aisle in tunnel.(4)Using the Fire Dynamics Software (FDS) to simulate the fire on high-speed trains, built the safe evacuation standards, gotten the distribution regularity of temperature, visibility, CO concentration in fire coach and tunnel and the available security egress time.(5)Based on the personnel distribution characteristics of the train coach and evacuation process in emergency, gotten the through capacity of coach's routes and exits, then analysis the required safe egress time.(6)Analysis influence to evacuation of the rescue channel width, connected aisle spacing and width in railway tunnel, established a mathematical model of evacuation time when high-speed train fire in tunnel taking into account rescue channel width, connected aisle spacing under high-speed train in a tunnel fire cross channel spacing..It can provide technical support and reference for improving the high speed railway tunnel fire escape evacuation and rescue capabilities,to ensure safety of lives and property and to design of tunnel fire safety management and relevant specification guidelines, through research of personnel escape in extra-long tunnel of high-speed railway.