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 ›› 2023, Vol. 42 ›› Issue (4): 499-502.

• • 上一篇    下一篇

火源位置对侧向排烟隧道排烟效果影响研究

明渝洋1,2,朱国庆1,2,彭 敏1,2,丁金虎3   

  1. (1.中国矿业大学 安全工程学院,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.淮北矿业(集团)有限责任公司物业分公司,安徽 淮北 235099)
  • 出版日期:2023-04-15 发布日期:2023-04-15
  • 作者简介:明渝洋(1999- ),男,江苏徐州人,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:
    国家自然科学基金项目(52204254)

Study on the effect of fire source positions on the smoke exhaust effect of tunnel with lateral smoke exhaust

Ming Yuyang1,2, Zhu Guoqing1,2, Peng Min1,2, Ding Jinhu3   

  1. (1. Faculty of Safety Engineering, 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. Property Branch of Huaibei Mining (Group) Co., Ltd.,Anhui Huaibei 235099, China)
  • Online:2023-04-15 Published:2023-04-15

摘要: 在采用侧向排烟的隧道内,由于火灾可以出现在距离排烟口的不同位置,隧道内温度及烟气流动也随之发生变化。因此,采用FDS,通过设定不同的纵向火源位置,研究侧向排烟隧道内的温度与烟气流动特征。结果表明,侧向排烟口对一定范围以内的区域能起到降温作用,其排烟量越大,温度降低越显著;侧向排烟口距离火源越远,越容易发生吸穿;排烟量的增加能显著减少烟气的纵向传播距离;与排烟量相比,火源位置对总排烟效率的影响不大,只对较近排烟口的排烟效率有明显影响。

关键词: 隧道火灾, 火源位置, 侧向排烟, 温度, 烟气

Abstract: In a lateral smoke exhaust tunnel, the temperature and smoke flow are different because of the relative distance of fire location and the vents. Thus, FDS software was used to analyze the characteristics of temperature and smoke flow in the lateral smoke exhaust tunnel by changing the longitudinal location of fire sources. According to the results, the lateral vent has a cooling effect within a certain area, and the larger the smoke exhaust rate, the more obvious the cooling effect is; The farther the lateral vent from the fire, the more likely it is to be plug-holing; Increasing the smoke exhaust rate of the lateral vents can significantly reduce the longitudinal spreading distance of the smoke; Compared with the smoke exhaust rate, the fire source position has little impact on the total smoke exhaust efficiency, and only has an obvious impact on the smoke exhaust efficiency of the near vents.

Key words: tunnel fire, fire position, lateral smoke exhaust, temperature, smoke