地铁区间运行列车火灾早期烟气特性研究

Abstract
Figure/Table
References
Related Citation (2)

Download: PDF (3002 KB) HTML (1 KB)
Export: BibTeX | EndNote (RIS)

Abstract Research purposes： Figuring out the characteristics of early smoke flow from a running train fire is the foundation of fire detection, location and warning. Based on the numerical simulation model of train fire, six different-location-fire models of roof, bottom, front, middle and rear of 120 km/h running train are used to study the variation of air temperature and smoke concentration at different times.
Research conclusions: （1）The smoke is asymmetrically distributed, and tends to spread to the rear, it can not detect the changes in temperature and smoke concentration from 1 m distance ahead of the fire.（2）The real-time monitoring values of temperature and smoke concentration are negatively correlated with the distance from fire source,and the air temperature of an under -train-fire is 100% higher than that of a fire on the roof, and the smoke concentration is 500% higher.（3）The relative velocity has little influence on the absolute temperature ratio. The absolute temperature ratio is greater than 0.45 (1 m away from the fire) and 0.75(3 m away from the fire) whether the relative velocity is 5 m/s or 10 m/s.（4）The research results could provide references for fire protection technical standards and the design of smoke management systems.

Key words： subway tunnel moving train early stage of fire smoke flow characteristics

Received: 21 May 2024

PACS:

U231.5

	Service

	E-mail this article
	Add to my bookshelf
	Add to citation manager
	E-mail Alert
	RSS
	Articles by authors
	JIANG Chongxu
	NA Yanling

Cite this article:

JIANG Chongxu,NA Yanling. Study on the Smoke Characteristics of Early Fire on a Running Train in the Tunnel[J]. Journal of Railway Engineering Society, 2024, 41(8): 111-115.

URL:

https://tdgcxb.crec.cn/EN/ OR https://tdgcxb.crec.cn/EN/Y2024/V41/I8/111

[1]	杜宝玲. 国外地铁火灾事故案例统计分析[J].消防科学与技术,2007(2):214-217.Du Baoling.Statistic Analysis of the Foreign Underground Fire Accidents Cases[J]. Fire Science and Technology,2007(2):214-217.
[2]	杨小华. 城市地铁火灾与应急救援体制建设研究[J].中国科技信息,2020(7):106-107.Yang Xiaohua.Research on Fire and Emergency Rescue System Construction in Urban Subway[J]. China Science and Technology Information,2020(7):106-107.
[3]	范晶. 纵向通风对地铁区间隧道火灾温度场及烟气流动试验研究[D]. 西安:西安科技大学,2020.Fan Jing.Experimental Study on Temperature Field and Smoke Flow of Fire in Subway Section Tunnel by Longitudinal Ventilation[D]. Xi'an:Xi'an University of Science and Technology,2020.
[4]	陈震. 地铁列车停靠区间隧道时火灾烟气蔓延规律及排烟效果研究[D]. 合肥:中国科学技术大学,2020.Chen Zhen.Study on Characteristics of Smoke Movement and Smoke Exhaustion in the Subway Tunnel with Metro Train[D].Hefei:University of Science and Technology of China,2020.
[5]	从伟. 地铁隧道/列车双狭长受限空间火灾烟气蔓延与特征参数演化规律[D]. 合肥:中国科学技术大学,2022.Cong Wei.Fire Smoke Movement and Evolution of Characteristic Parameters in the Double Long-narrow and Confined Space of Subway Tunnel/train[D]. Hefei:University of Science and Technology of China,2022.
[6]	王利娟. 视频监控中火灾烟气探测方法研究[D]. 徐州:中国矿业大学, 2015.Wang Lijuan.Study on Fire Smoke Detection Method in Video Surveillance System[D]. Xuzhou:China University of Mining & Technology,2015.
[7]	张网. R290和R32制冷空调系统火灾危险性的理论及试验研究[D]. 天津:天津大学,2017.Zhang Wang.Theoretical and Experimental Research on the Flammability Hazards of an Air Conditioner System using Refrigerant R290 and R32[D]. Tianjin:Tianjin University,2017.
[8]	周远龙. 高速列车火灾热释放速率研究[D]. 成都:西南交通大学,2021.Zhou Yuanlong.Study on the Heat Release Rate of the High-speed Train Fire[D]. Chengdu:Southwest Jiaotong University,2015.
[9]	申婷. 地铁隧道电线电缆火灾危险性研究[D]. 北京:首都经济贸易大学,2018.Shen Ting.Research on Fire Hazard of Wire and Cable in Subway Tunnel[D]. Beijing:Capital University of Economics and Business,2018.