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 ›› 2022, Vol. 41 ›› Issue (10): 1347-1353.

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倾斜隧道内可燃液体连续泄漏漫流特征及其潜在火灾热释放速率试验研究

郭庆华1，张绍绮2，赵维刚2，闫治国3   

  1. （1. 应急管理部天津消防研究所，天津 300381； 2. 石家庄铁道大学 安全工程与应急管理学院，河北 石家庄 050043； 3. 同济大学 土木工程学院，上海 200092）
  • 出版日期:2022-10-15 发布日期:2022-10-15
  • 通讯作者: 应急管理部天津消防研究所基科费项目（2021SJ09）
  • 作者简介:作者简介：郭庆华（1989- ），男，应急管理部天津消防研究所助理研究员，主要从事隧道及地下空间火灾安全的研究，天津市南开区卫津南路110号，300381。

Experimental study on the spillage characteristics of continuously leaked liquid fuel and potential heat release rates in sloped tunnels

Guo Qinghua1, Zhang Shaoqi2,Zhao Weigang2, Yan Zhiguo3   

  1. (1. Tianjin Fire Science and Technology Research Institute of MEM, Tianjin 300381, China; 2. School of Safety Engineering and Emergency Management, Shijiazhuang Tiedao University, Hebei Shijiazhuang 050043, China; 3. College of Civil Engineering, Tongji University, Shanghai 200092, China)
  • Online:2022-10-15 Published:2022-10-15

摘要： 摘 要：为研究倾斜隧道内可燃液体泄漏漫流引发的潜在火灾危险性，建立了双向坡度可调试验平台，对连续泄漏漫流形态、宽度、面积等特征随隧道坡度的变化规律进行了试验研究；同时开展火灾试验，研究燃料厚度对热释放速率的影响。结果表明：当隧道仅存在纵坡时，随着坡度的增加，液体漫流宽度及面积缩小；当同时存在横坡和纵坡时，液体流向隧道侧墙，漫流长度及面积缩小。液体漫流平均厚度为2 mm，该厚度下可燃液体热释放速率为经典模型计算值的30%~50%。结合上述试验研究，可对隧道内可燃液体连续泄漏漫流潜在火灾热释放速率进行估算。研究结果表明：隧道横坡由1%增加至2%，液体漫流面积可减少约50%，大幅降低潜在的热释放速率。

关键词: 关键词：倾斜隧道, 可燃液体泄漏, 漫流火灾, 热释放速率

Abstract: Abstract: The paper focuses on the fire risk caused by the spilled liquid fuel in tunnels. The small-scale test platform with adjustable longitudinal and transverse slopes was established to study the spillage profile, spillage width and area. Meanwhile, the fire tests were carried out to investigate the impact of the fuel depth on the heat release rates. The results indicate that under the longitudinal slopes, the spillage width and area decreases as the slopes become great. When there are both longitudinal and transverse slopes, the liquid fuel spills towards the tunnel sidewall, and as a result, the spillage length and area decrease. In addition, the average depth spilled liquid investigated in this work is 2 mm, and the heat release rates of the fuel under this depth is 30%~50% of the theoretical values which are obtained by using a deep fuel. Based on the above achievement, the potential heat release rates caused by the spilled liquid fuel fires can be evaluated. The finding is that when the transverse slopes increase from 1% to 2% under a given longitudinal slope of a tunnel, the potential heat release rates of the fires caused by the spilled liquid fuel may be decreased by 1/2.

Key words: Key words: sloped tunnel, liquid fuel leakage, spilled liquid fire, heat release rate