《火灾科学（中英文）》编辑部

余雪娟,王峻,舒晓峰,徐志胜,王伟.纵向风作用下大间距排烟阀组集中排烟模式排烟性能研究[J].火灾科学,2026,35(1):21-31.

纵向风作用下大间距排烟阀组集中排烟模式排烟性能研究

Study on smoke evacuation performance of centralized smoke evacuation mode with large spacing smoke exhaust valve group under the action of longitudinal wind

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DOI：10.3969/j.issn.1004-5309.2026.01.03

基金项目:

作者	单位
余雪娟	1. 江苏省交通工程建设局, 南京, 210004
王峻	1. 江苏省交通工程建设局, 南京, 210004
舒晓峰	1. 江苏省交通工程建设局, 南京, 210004
徐志胜^^	2. 中南大学防灾科学与安全技术研究所, 长沙, 410075
王伟	2. 中南大学防灾科学与安全技术研究所, 长沙, 410075

中文关键词: 隧道火灾纵向通风大间距排烟阀组排烟性能

英文关键词:Tunnel fire Longitudinal velocity Large spacing exhaust valve group Smoke exhaust performance

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中文摘要:

为了研究大间距排烟阀组集中排烟模式在不同纵向风速下的排烟效果,得到最佳排烟方案,基于FDS数值模拟,考虑不同纵向风速、排烟量及排烟阀组间距的影响,分析隧道流场、烟气蔓延范围和排热效率的变化规律。结果表明:两排烟阀组排烟口流速变化整体呈“V”形分布,越靠近排烟风机流速越大;火源上游烟气回流长度随纵向风速增至3 m/s后得到很好控制;火源下游烟气蔓延距离随排烟量的增大而减小,且纵向风速越大减小的趋势越明显;隧道排烟系统排热效率与纵向风速呈正相关关系,与排烟阀组间距呈负相关关系,在此基础上,提出了排热效率随纵向风速和排烟阀间距变化的线性关系式。基于分析,建议纵向风作用下大间距排烟阀组集中排烟方案为:纵向风速3 m/s,排烟阀组设置间距300 m,排烟量选取300 m3/s或340 m3/s。

英文摘要:

To study the effect of centralized smoke exhaust mode of large distance smoke exhaust valve group under different longitudinal wind speeds and obtain the best smoke exhaust scheme, this paper analyzes the change law of tunnel flow field, smoke spreading range and heat exhaust efficiency based on FDS numerical simulation, considering the influence of different longitudinal wind speeds, smoke exhaust volume and the distance between smoke exhaust valve group. The results show that the flow velocity of the two flue valve groups exhibits a "V" distribution, and the closer the flow velocity is to the smoke exhaust fan, the greater it is. The flue gas reflux length in the upper reaches of the fire source is well controlled when the longitudinal wind speed increases to 3 m/s. The downstream spread distance of smoke of the fire source decreases with increasing smoke emission, and the decreasing trend is more profounded with the increase of longitudinal wind speed. Based on the positive correlation between heat removal efficiency and longitudinal wind speed and the negative correlation between exhaust valve group spacing, a linear relation between heat removal efficiency and longitudinal wind speed and exhaust valve spacing was proposed. Based on the analysis in this paper, it is suggested that the central smoke exhaust scheme of large-spacing smoke exhaust valve groups under longitudinal wind action is as follows: longitudinal wind speed is 3 m/s, the spacing of smoke exhaust valve groups is 300 m, and the smoke exhaust volume is 300 m3/s or 340 m3/s.

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