主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2024, Vol. 43 ›› Issue (9): 1286-1291.

• • 上一篇    下一篇

隧道区间内运行列车车顶火灾特性研究

樊新阳, 唐飞, 黄亚军, 胡隆华   

  1. （中国科学技术大学 火灾科学国家重点实验室，安徽 合肥230026）
  • 出版日期:2024-09-15 发布日期:2024-09-15
  • 作者简介:樊新阳(2001- )，女，山西临汾人，中国科学技术大学博士研究生，主要从事隧道火灾研究，安徽省合肥市蜀山区黄山路443号，230026。
  • 基金资助:
    国家重点研发计划课题（2022YFC3005201）

Study on the roof fire characteristics of running train in a tunnel

Fan Xinyang, Tang Fei, Huang Yajun, Hu Longhua   

  1. (State Key Laboratory of Fire Science, University of Science and Technology of China, Anhui Hefei 230026, China)
  • Online:2024-09-15 Published:2024-09-15

摘要： 为探究地铁区间隧道高速运行列车车顶火灾特性，构建缩尺寸隧道列车模型，开展移动火灾试验，设置不同列车运行速度及火灾热释放速率,并结合数值模拟，揭示隧道高速（20～150 km/h）运行列车车顶火灾发展特征参数演化的规律。试验结果表明：车顶最高温度随列车运行速度增加而呈现先增加后减小的趋势，其中，最大温差达205 ℃；此外，随着列车运行速度的增加，竖直火焰高度逐渐降低，水平火焰长度呈现出先增后减的变化趋势，临界运行速度随着热释放速率的增大而增加，并通过数值模拟验证了这一火灾行为。结合缩尺寸试验研究，构建了隧道运行列车车顶火灾水平火焰长度的分段预测模型。

关键词: 隧道列车火灾, 运动火源, 火焰形态, 温度分布

Abstract: In order to study the fire development characteristics of high-speed running train roof fires in subway tunnel, a series of moving fire experiments were conducted on a constructed downscaled tunnel train model, setting up different train running speeds and heat release rates, and full-scale numerical simulations were combined to reveal the evolution law of the fire characteristics of high-speed train roof fires in a tunnel（20～150 km/h）. The experimental results show that the maximum temperature on the train roof shows a trend of increasing and then decreasing with the increase of train running speed, in which the maximum temperature change reaches 205 °C; Moreover, with the increase of train running speed, the vertical flame height gradually decreases, and the horizontal flame length shows a trend of increasing and then decreasing, and the critical running speed increases with increasing heat release rate, which is verified by numerical simulation. Combined with the scaled-down experimental study, a segmented prediction model of the flame length of the roof fire of the running train in the tunnel was proposed.

Key words: tunnel train fire, moving fire, flame shape, temperature distribution