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为全面定量分析地铁火灾情况下人员疏散过程,基于网模拟和场模拟对地铁火灾环境的适应性,分析列车着火并滞留在隧道的不同控风方案的可行性,以天津1号线下瓦房站至南楼站之间的隧道为例,用网模拟技术模拟出隧道内风流状态,为场维模拟提供边界条件。以网模拟得出的火源相邻分支风速2 m/s为边界条件进行场模拟,得出的结果表明,列车车头着火并滞留在隧道中,人员在6 min的安全疏散时间内,从着火隧道经联络通道向相邻隧道疏散的情况下,着火隧道推拉式排烟,相邻隧道对送风为可行通风模式。
In order to comprehensively and quantitatively analyze the evacuation process of subway fire, based on the adaptability of network simulation and field simulation to subway fire environment, the feasibility of different wind-control schemes of train fire and staying in tunnel is analyzed. Taking the tunnel between station and Nanlou station as an example, the network simulation technology is used to simulate the state of the airflow in the tunnel and provide the boundary conditions for the field dimension simulation. The simulation results show that the train head is on fire and remains in the tunnel. During the safe evacuation time of 6 min, the fire from the fire When the tunnel is evacuated to the adjacent tunnel via the connecting channel, the fire-extinguishing tunnel is pushed and pulled to exhaust the smoke, and the adjacent tunnel is feasible for the ventilation mode.