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 ›› 2025, Vol. 44 ›› Issue (7): 889-896.

• • 上一篇    下一篇

不对称V形隧道火灾顶棚烟气温度分布特性的试验研究

刘文博1, 李俊梅2, 李炎锋2   

  1. （1.中交公路规划设计院有限公司，北京 100010； 2.北京工业大学 绿色建筑环境与节能技术北京市重点实验室，北京 100124）
  • 收稿日期:2024-09-13 修回日期:2024-10-16 出版日期:2025-07-24 发布日期:2025-07-15
  • 作者简介:刘文博，中交公路规划设计院有限公司，硕士，主要从事隧道通风及消防系统的设计和研究，北京市东城区前炒面胡同33号，100010。
  • 基金资助:
    北京市自然科学基金资助项目（8222002）

Experimental study on the longitudinal distribution of the ceiling temperature in asymmetric V-shaped tunnel fire

Liu Wenbo1, Li Junmei2, Li Yanfeng2   

  1. (1. CCCC Highway Consultants Co. Ltd., Beijing 100010, China; 2. Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing University of Technology, Beijing 100124, China)
  • Received:2024-09-13 Revised:2024-10-16 Online:2025-07-24 Published:2025-07-15

摘要： 为研究不对称V形隧道内火灾的温度分布特性，采用理论分析结合小尺寸试验的方法，针对不对称V形隧道的结构组成，研究火灾工况下火源位于变坡点时，隧道两侧不同的坡度构成和火源功率对隧道内烟气流动及温度分布特性的影响。研究结果表明，受V形隧道变坡点两侧不对称结构产生的热压差的影响，烟气在V形隧道变坡点两侧隧道内呈现不同的流动特性及温度分布特性，烟气的流动受火源功率、变坡点两侧的坡度构成的影响，得到了不对称V形隧道内顶棚温度衰减预测模型。

关键词: 不对称V形隧道, 烟气流动, 火灾, 温度分布模型

Abstract: Based on theoretical analysis and small-scale experiments, the influence of different slope composition and fire power on the smoke flow and temperature distribution in asymmetric V-shaped tunnel under fire conditions was studied when the fire was located at the variable slope point. The results show that, due to the influence of thermal pressure difference caused by the asymmetric structure on both sides of the slope change point, the flow characteristics and temperature distribution of smoke in the tunnel on both sides of the V-shaped tunnel are different. The smoke flow is affected by the fire power and the slope composition on both sides of the V-shaped tunnel, and the longitudinal ceiling temperature prediction model in the asymmetric V-shaped tunnel is obtained.

Key words: asymmetric V-shaped tunnel, smoke movement, fire, temperature distribution model