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 ›› 2021, Vol. 40 ›› Issue (5): 672-678.

• • 上一篇    下一篇

城市V形坡隧道火灾最高温度数值模拟

姜学鹏1,2,3，于思维1,2，金俊1,2   

  1. 1. 武汉科技大学资源与环境工程学院，湖北武汉430081；2. 武汉科技大学消防安全技术研究所，湖北武汉430081；3. 湖北省工业安全工程技术研究中心，湖北武汉430081
  • 出版日期:2021-05-15 发布日期:2021-05-15
  • 作者简介:姜学鹏(1976-)，男，山东青岛人，武汉科技大学资源与环境工程学院教授，博士生导师，主要从事隧道及地下空间火灾动力学与防治研究工作，湖北省武汉市青山区和平大道947 号，430081。
  • 基金资助:
    国家自然科学基金项目（51874213，51806156）；湖北省自然科学项目（2018CFB185,2018CFB226）

Numerical simulation of maximum temperature of urban V-shaped slope tunnel fire

JIANG Xue-peng1, 2, 3，YU Si-wei1, 2, JIN Jun1, 2   

  1. 1. School of Resource and Environmental Engineering, Wuhan University of Science and Technology, Hubei Wuhan 430081, China; 2. Fire Safety Technology Institute, Wuhan University of Science and Technology, Hubei Wuhan 430081, China; 3. Hubei Provincial Industrial Safety Engineering Technology Research Center, Hubei Wuhan 430081, China
  • Online:2021-05-15 Published:2021-05-15

摘要： 采用FDS 数值模拟方法，对V 形坡隧道火灾时烟气运动特性及隧道纵向中心线上温度分布情况进行研究，并提出不同火灾位置时顶板最大温升参数经验预测模型。结果表明，火源位于变坡点右侧120 m 时，隧道纵向中心线峰值温度点向下游偏移，偏移距离随坡度的增加而增加，隧道顶板最高温度随坡度的增加而减小。通过推导无量纲火源位置与变坡点距离不同时的最大温升参数预测模型得出，无量纲最大温升参数随无量纲火源位置的增大而增大、与无量纲热释放速率的0.8 次幂成正比，且与隧道坡度呈非线性非单调关系。

关键词: V 形坡隧道, 火灾烟气, 最大温升, 数值模拟, 无量纲分析

Abstract: By using the FDS numerical simulation method, the smoke movement characteristics of the V- shaped slope tunnel and the temperature distribution on the longitudinal centerline of the tunnel during a fire are studied, and an empirical prediction model for the maximum temperature rise parameters of the roof at different fire positions is proposed. The results show that when the fire source is 120 m away from the right of the slope change point, the peak temperature point of the longitudinal centerline of the tunnel shifts to the downstream direction, the shift distance increases with the increase of the slope, and the maximum temperature of the tunnel roof decreases with the increase of the slope. By deriving the prediction model of the maximum temperature rise parameter when the distance between the nondimensional fire source position and the variable slope point is different, it is concluded that the dimensionless maximum temperature rise parameter increases with the increase of the dimensionless fire source position, and is proportional to the 0.8th power of the dimensionless heat release rate, and has a nonlinear and non-monotonic relationship with the slope of the tunnel.

Key words: V- slope tunnel, fire smoke, maximum temperature rise, numerical simulation, non-dimensional analysis