特长铁路隧道救援站纵向排烟模式下烟气蔓延模拟分析

Fire and Smoke Spreading Simulation and Analysis of Extraordinary Railway Tunnel Rescue Station under Vertical Smoke Extraction Mode

针对救援站不同的排烟模式、不同火灾位置、不同坡度,采用流体动力学模拟软件FDS建立隧道、救援站和疏散通道计算模型,对紧急救援站的通风排烟效果进行模拟研究,分析不同通风排烟模式下的控烟效果,分析人员逃生过程中影响人员安全疏散的关键参数的分布情况,给出不同工况下可供人员疏散的可用安全疏散时间,并与人员逃生疏散的必需时间进行对比,获得不同工况下事故列车停靠在救援站进行人员逃生疏散的安全性,进而指导救援站内事故隧道、安全隧道和横向疏散通道的通风排烟方案设计和设备配置选型。

According to various smoke extraction mode, fire location and slope gradient of rescue station, use hydrodynamic simulation soft＇ware FDS establish tunnel, rescue station and evacuated channels calculation model, simulate the ventilation and smoke extraction results of emergency rescue station, analysis the smoking control result under different ventilation and smoke extraction mode, analysis the distribution situation of parameters that influence people＇s safe evacuation when personnel escape, give egress time that available for escape under different conditions, and compare with requirement time for escape, obtain the safety of people evacuation when damaged train stopping at rescue station under different condition, at last can provide guidance for ventilation and smoke extraction Scheme design and equipment type selection of accidental tunnel, safety tunnel and transverse evacuated channels in rescue station.