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 (4): 440-443.

• • 上一篇    下一篇

贴壁线性火源在综合管廊电缆舱中的火灾行为研究

刘 欣1,2,3，朱国庆1,2,3，王璞璠1,2,3，徐 刚1,2,3   

  1. （1.中国矿业大学 城市地下空间火灾防护江苏省高校重点实验室，江苏 徐州 221116；2.中国矿业大学 公共安全与消防研究所，江苏 徐州 221116；3.中国矿业大学 安全工程学院，江苏 徐州 221116）
  • 出版日期:2022-04-15 发布日期:2022-04-15
  • 作者简介:刘 欣（1998-），男，山东日照人，中国矿业大学安全工程学院硕士研究生，主要从事火灾科学研究，江苏省徐州市铜山区大学路1号， 221116。
  • 基金资助:
    应急管理部消防救援局科技计划项目(2020XFLR43)

Study on fire behavior of linear fire source along the wall in cable cabin of utility tunnel

LIU Xin1,2,3, ZHU Guo-qing1,2,3,WANG Pu-fan1,2,3, XU Gang1,2,3   

  1. （1. University Key Laboratory of Urban Underground Space Fire Protection, China University of Mining and Technology, Jiangsu Xuzhou, 221116, China; 2. Institute of Public Safety and Fire, China University of Mining and Technology, Jiangsu Xuzhou 221116, China; 3. Faculty of Safety Engineering, China University of Mining and Technology, Jiangsu Xuzhou 221116， China）
  • Online:2022-04-15 Published:2022-04-15

摘要： 在缩尺寸管廊模型中进行电缆火灾试验，在距离管廊底部15，45，75，105 cm处贴壁放置线性火源，研究贴壁线性火源在不同高度处的火灾行为。通过试验分析发现，与点火源不同，线性火源的热释放速率随着高度的增加而减小；对有效火焰高度进行修正，通过拟合得到有效火焰高度的预测式；对羽流区和射流区的横向温度分别进行分析，得到横向羽流区和射流区的温度分布预测式。

Abstract: The cable fire test was carried out in the scaled utilitytunnel model. Linear fire sources were placed on the wall at 15 ,45, 75 ,105 cm from the bottom of utility tunnel to study the fire behavior of the linear fire sources at different heights. It is found that the heat release rate of the linear fire source decreases with the increase of the height, which is different from the point fire source. The effective flame height was modified and the prediction formula of the effective flame height was obtained by fitting. The prediction formulas of the temperature distribution are obtained by analyzing the transverse temperature in plume region and jet region respectively. It provides technical support for the design of utility tunnel fire detection system and automatic fire extinguishing system.

Key words: utility tunnel, linear fire source, heat release rate;flame height, transverse temperature