大断面沉管隧道火灾人员疏散及应急救援仿真分析

Simulated Analysis of Evacuation and Emergency Rescue in Extra-Wide Immersed Tunnel Fire

为了更好地规划设计隧道内发生火灾时人员疏散及救援路线,针对深中通道超大断面沉管隧道的疏散救援设施的实际工程状况,采用FDS、Pathfinder以及Vissim软件对隧道火灾工况下人员疏散以及救援技术进行分析和验证。计算结果表明,本项目隧道人员疏散安全门的尺寸和间距设置满足隧道内发生火灾时人员疏散要求,东人工岛、西人工岛以及三围互通收费广场3处分别设置的消防救援点可满足应急救援的时间要求,此结论可为设计人员提供参考。

In order to better plan the evacuation and rescue route of fire emergency in the tunnel,personnel evacuation and rescue techniques under circumstance of fire emergency in the tunnel are verified and analyzed by software of FDS, Pathfinder and Vissim in the context of the actual engineering conditions of the evacuation and rescue facilities for the deep-span mega-section immersed tunnels. The results of simulation show that the distance and size of the evacuation safety door of the tunnel of the project meet the evacuation requirements of fire emergency in the tunnel. The fire rescue stations can be set up in the east artificial island, the west artificial island and three surrounding toll plazas to meet the demands of emergency rescue time. The results can be provided for designers as references as well.