[1]蒋尧,周远龙,胡炜,等.防护门处风速对铁路隧道紧急救援站火灾烟气的影响[J].高速铁路技术,2020,11(04):49-54.[doi:10.12098/j.issn.1674-8247.2020.04.010]
　JIANG Yao,ZHOU Yuanlong,HU Wei,et al.Influence of Wind Speed at Screen Door on Fire Smoke of Railway Tunnel Emergency Rescue Station[J].HIGH SPEED RAILWAY TECHNOLOGY,2020,11(04):49-54.[doi:10.12098/j.issn.1674-8247.2020.04.010]
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防护门处风速对铁路隧道紧急救援站火灾烟气的影响()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
11卷
期数:
2020年04期
页码:
49-54
栏目:
出版日期:
2020-08-28

文章信息/Info

Title:
Influence of Wind Speed at Screen Door on Fire Smoke of Railway Tunnel Emergency Rescue Station
文章编号:
1674—8247(2020)04—0049-06
作者:
蒋尧;  周远龙;  胡炜;  谭信荣;  毕海权
1. 中铁二院工程集团有限责任公司, 成都 610031;
2. 西南交通大学, 成都 610031
Author(s):
JIANG Yao;  ZHOU Yuanlong;  HU Wei;  TAN Xinrong;  BI Haiquan
1. China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China;
2. Southwest Jiaotong University, Chengdu 610031, China
关键词:
隧道|紧急救援站|火灾烟气|防护门风速|半横向通风
Keywords:
tunnel|emergency rescue station|fire smoke|wind speed at screen door|semi-transverse ventilation
分类号:
U453.5
DOI:
10.12098/j.issn.1674-8247.2020.04.010
文献标志码:
A
摘要:
为分析防护门处不同风速条件下紧急救援站火灾烟气的蔓延特性，得出防护门处风速对烟气控制的影响，本文以某双洞单线特长铁路隧道紧急救援站工程为依托，建立了救援站火灾烟气蔓延的三维数值仿真模型，研究不同火源位置、防护门处风速条件下的火灾烟气蔓延特性。结果表明：（1）双洞单线铁路隧道紧急救援站采用半横向通风方式时，增大防护门处风速，对于降低隧道顶部最高烟气温度的作用有限，却加大了对高温烟气的扰动，使特征高度2.0m处的温度升高，能见度下降；防护门处风速不是越大越好，建议采用防止烟气进入横通道的临界风速即可。（2）火灾车厢位于排烟竖井正下方、两横通道之间，对控制烟气蔓延较为有利，位于两排烟竖井之间、横通道正前方，对控制烟气蔓延较为不利；建议增加排烟竖井数量，使火灾车厢尽量位于排烟竖井下方。研究结果可为相关工程设计提供参考。
Abstract:
In order to analyze the characteristics of fire smoke spread in emergency rescue station under different wind speeds at the screen door and to determine the influence of wind speed at the screen door on smoke control, this paper established a three-dimensional numerical simulation model of fire smoke spread in emergency rescue station based on a double-hole single-track railway tunnel project, to study the characteristics of fire smoke spread under different fire source positions and wind speeds at the screen door. The results show that: (1) When the emergency rescue station of double-hole single-track railway tunnel adopts semi-transverse ventilation mode, increasing the wind speed at the screen door has a limited role on reducing the maximum flue gas temperature at the top of the tunnel, but it increases the disturbance to the high-temperature flue gas, which increases the temperature at the characteristic height of 2.0 m and reduces the visibility; The greater the wind speed at the screen door, the better. It is recommended to use the critical wind speed to prevent the smoke from entering the cross passage. (2) If the fire compartment is located just below the smoke exhaust shaft and between the two cross passages, which is favorable for controlling smoke spread, and is located between the two smoke exhaust shafts and in front of the cross passages, which is unfavorable for controlling smoke spread; It is suggested that the number of smoke exhaust shafts should be increased so that the fire compartment can be located below the smoke exhaust shafts as much as possible. The research results can provide a reference for related engineering design.

备注/Memo

备注/Memo:
作者简介:蒋尧(1991-),男,工程师。引文格式:蒋尧, 周远龙, 胡炜, 等. 防护门处风速对铁路隧道紧急救援站火灾烟气的影响[J].高速铁路技术, 2020, 11(4):49-54.JIANG Yao, ZHOU Yuanlong, HU Wei, et al. Influence of Wind Speed at Screen Door on Fire Smoke of Railway Tunnel Emergency Rescue Station[J]. High Speed Railway Technology, 2020, 11(4):49-54.
更新日期/Last Update: 2020-08-28