摘要
运用火灾动力学模拟软件PyroSim对南京长江隧道纵向通风进行模拟,找到不同通风速率条件下火灾蔓延的规律,并得到隧道温度和烟气分布状况,选择3.0 m/s为纵向通风临界风速.在此基础上结合南京长江隧道现有的消防及应急救援系统,对临界风速下隧道结构安全性能进行分析与评估,所得结果为南京长江隧道工程的防火性能提供依据,同时也能为类似工程提供参考.
PyroSim, fire dynamic simulator software, is utilized to simulate the longitudinal ventilation in Nanjing Yangtze River Tunnel, in an attempt to find out the law of fire spreading at different ventilation velocities. Moreover, the temperatures and distribution of smoke in the tunnel are also obtained, and the wind velocity （3.0 m/s） is selected as the longitudinal ventilation critical wind velocity. Based on the existing fire-protection and emergency system, the safety of Nanjing Yangtze River Tunnel at critical wind velocity is analyzed and evaluated. The results can provide basis for fire protection performance in Nanjing Yangtze River Tunnel and reference for similar projects.
出处
《南京工程学院学报（自然科学版）》
2012年第3期40-45,共6页
Journal of Nanjing Institute of Technology(Natural Science Edition)
关键词
南京长江隧道
临界风速
隧道安全
Nanjing Yangtze River Tunnel
critical wind velocity
tunnel safety
