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 ›› 2023, Vol. 42 ›› Issue (10): 1350-1355.

• • 上一篇    下一篇

公路隧道内不同横向位置的双火源火焰合并概率试验研究

彭伟, 谢奇, 刘贤浩, 臧雪   

  1. （安徽理工大学 安全科学与工程学院，安徽 淮南 232000）
  • 出版日期:2023-10-15 发布日期:2023-10-15
  • 作者简介:彭 伟（1981- ），男，安徽淮南人，安徽理工大学安全科学与工程学院教授，主要从事火灾防治方面研究，安徽省淮南市田家庵区泰丰大街168号，232000。

Experimental study on flame merging probability of double pool fires at different transverse positions in road tunnel

Peng Wei, Xie Qi, Liu Xianhao, Zang Xue   

  1. (School of Safety Science and Engineering, Anhui University of Science and Technology, Anhui Huainan 232000, China)
  • Online:2023-10-15 Published:2023-10-15

摘要： 为探究自然通风隧道内双火源的火焰合并概率，利用1:10小尺寸隧道模型开展了一系列试验。重点分析了火源的横向位置和火源间距对火焰合并概率的影响。结果表明：不同隧道横向位置的双火源火焰合并都存在持续合并阶段、间歇合并阶段和不合并阶段。在持续合并阶段内，火焰合并概率始终等于1，在间歇合并阶段内，火焰合并概率随着火源间距的增大而快速减小；在不合并阶段内，火焰合并概率始终为0；贴壁位置处的双火源火焰合并概率下降至0所需要的火源间距更大。在无量纲火源间距大于等于0.27且小于等于0.8区间内：当无量纲火源横向位置小于等于0.06时，火焰合并概率比值随着无量纲火源横向位置的增大而线性减小；当无量纲火源横向位置大于0.06时，火焰合并概率比值不再随无量纲火源横向位置的增大而发生明显变化。

关键词: 自然通风隧道, 双火源, 火焰合并概率, 火源间距, 隧道横向位置

Abstract: To investigate the flame merging probability of dual fires in a naturally ventilated tunnel, a series of experiments were conducted using a 1∶10 scale model of the tunnel. The study focused on how the position and spacing of the fires affected the merging probability. The results showed that the merging of fires in different positions can be categorized into three stages: continuous merging, intermittent merging, and non-merging. In the continuous merging stage, the probability of flame merging is always 1. In the intermittent merging phase, the probability of flame merging decreases rapidly as the distance between the fires increases. In the non-merging phase, the probability of flame merging is always 0, and a greater distance between the fires is needed for the probability of flame merging at the wall-adhering position to reach 0. In the range of dimensionless fire source spacing between 0.27 and 0.80, when the dimensionless fire source lateral position is less than or equal to 0.06, the probability ratio of flame merging decreases linearly with the increase of non-dimensional lateral position of the fire source. When the non-dimensional lateral position of the fire source is greater than 0.06, the ratio of flame merging probability no longer changes significantly with the increase of non?dimensional lateral position of the fire source.

Key words: naturally ventilated tunnel, dual fires, flame merging probability, fires spacing, transverse position of the tunnel