细水雾和纵向通风耦合作用对隧道火灾影响的数值模拟

doi:10.3969/j.issn.1674-0696.2022.08.07

重庆交通大学学报（自然科学版） ›› 2022, Vol. 41 ›› Issue (08): 43-52.DOI: 10.3969/j.issn.1674-0696.2022.08.07

• 交通+大数据人工智能 • 上一篇下一篇

细水雾和纵向通风耦合作用对隧道火灾影响的数值模拟

王亚琼1,2，李培军1,2，任锐1,2，李勇1,2，宋晓1,2

(1. 长安大学公路学院，陕西西安 710064； 2. 长安大学陕西省公路桥梁与隧道重点实验室，陕西西安 710064)

收稿日期:2020-11-23 修回日期:2021-02-18 发布日期:2022-08-19
作者简介:王亚琼（1975—），男，安徽安庆人，教授，博士，主要从事隧道工程方面的研究。E-mail：ys08@gl.chd.edu.cn 通信作者：李培军（1997—），男，四川巴中人，硕士研究生，主要从事隧道工程方面的研究。E-mail：lpj@chd.edu.cn
基金资助:
国家自然科学基金项目(51908061，51978059)；城市地下工程教育部重点实验室开放研究基金项目(TUE2019-01)

Numerical Simulation of the Coupling Effect of Water Mist and Longitudinal Ventilation on Tunnel Fire

WANG Yaqiong1, 2, LI Peijun1, 2, REN Rui1, 2, LI Yong1, 2, SONG Xiao1, 2

(1. School of Highway, Changan University, Xian 710064, Shaanxi, China; 2. Shaanxi Provincial Major Laboratory for Highway Bridge & Tunnel, Changan University, Xian 710064, Shaanxi, China)

Received:2020-11-23 Revised:2021-02-18 Published:2022-08-19

摘要/Abstract

摘要： 针对公路隧道细水雾自动消防系统，使用FDS软件建立了全尺寸模型；设置火源功率为20 MW，在细水雾和不同纵向通风耦合作用下对隧道火灾的排烟降温效果进行了研究。研究结果表明：无细水雾时，随着风速加快，火源上方和下游10 m处温度降低，但火源下游5 m处温度升高；无纵向风时，细水雾降低温度效果有限，且开启细水雾后温度波动较大；在细水雾和纵向通风共同作用下，火源上方和下游10 m处的温度可得到较好控制，但火源下游5 m处稍低位置的温度呈升高趋势(风速为2 m/s)；当纵向风速为2 m/s时，细水雾使烟气下沉到火源下游5 m附近。

关键词: 隧道工程；细水雾；纵向通风；隧道火灾；数值模拟

Abstract: Aiming at the automatic water mist firefighting system of highway tunnel, a full-scale model with 20 MW fire source was established by FDS software to study the coupling effect of water mist and different longitudinal ventilation on smoke exhaust and cooling effect of tunnel fire. The research results show that when there is no water mist, with the acceleration of wind speed, the temperature above the fire source and 10m downstream of the fire source decreases, but the temperature at 5 m downstream of the fire source increases. When there is no longitudinal wind, the temperature reduction effect of water mist is limited, and the temperature fluctuates greatly after turning on water mist. Under the combined action of water mist and longitudinal ventilation, the temperature above the fire source and 10m downstream of the fire source can be well controlled, but the temperature at the lower position 5m downstream of the fire source shows an increasing trend (the wind speed is 2 m/s). When the longitudinal wind speed is 2 m/s, the water mist makes the smoke sink to about 5 m downstream of the fire source.

Key words: tunnel engineering; water mist; longitudinal ventilation; tunnel fire; numerical simulation

中图分类号:

U458.1

王亚琼1,2，李培军1,2，任锐1,2，李勇1,2，宋晓1,2. 细水雾和纵向通风耦合作用对隧道火灾影响的数值模拟[J]. 重庆交通大学学报（自然科学版）, 2022, 41(08): 43-52.

WANG Yaqiong1, 2, LI Peijun1, 2, REN Rui1, 2, LI Yong1, 2, SONG Xiao1, 2. Numerical Simulation of the Coupling Effect of Water Mist and Longitudinal Ventilation on Tunnel Fire[J]. Journal of Chongqing Jiaotong University(Natural Science), 2022, 41(08): 43-52.

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细水雾和纵向通风耦合作用对隧道火灾影响的数值模拟

Numerical Simulation of the Coupling Effect of Water Mist and Longitudinal Ventilation on Tunnel Fire

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