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 ›› 2022, Vol. 41 ›› Issue (8): 1056-1060.

• • 上一篇    下一篇

基于FDS的公路隧道火灾可逆射流风机通风疏散研究

李方舰1,李 婧1,戎 贤1,2,张一鸣1   

  1. (1.河北工业大学 土木与交通学院,天津 300401; 2.河北省土木工程技术研究中心,天津 300401)
  • 出版日期:2022-08-15 发布日期:2022-08-15
  • 作者简介:作者简介:李方舰(1998—),男,河北石家庄人,河北工业大学土木与交通学院硕士研究生,主要从事防灾减灾工程及防护工程研究,天津市北辰区西平道5340号,300401。
  • 基金资助:
    河北省自然科学基金(E2019202441);河北省重点研发项目(19275404D);河北省交通运输厅科技资助项目(TH1-202020);天津市交通运输科技发展计划项目(2021-18)

Study on ventilation and evacuation of highway tunnel fire reversible jet fan based on FDS

LI Fang-jian1, LI Jing1, RONG Xian1,2, ZHANG Yi-ming1   

  1. (1. School of Civil and Transportation Engineering, HebeiUniversity of Technology, Tianjin 300401, China; 2. Hebei Civil Engineering Technology Research Center, Tianjin 300401, China)
  • Online:2022-08-15 Published:2022-08-15

摘要: 随着我国公路隧道从高速建设期转变为建设与管理并重期,可逆射流风机在隧道通风系统中得到广泛应用。为探究可逆射流风机在隧道火灾下通风运行方式对人员疏散的影响,依托广东山隧道,采用5,20 MW两种火源功率,研究不同射流风机运行方式下隧道中部区域烟气、温度、CO体积分数及能见度的变化特性。结果表明,自然风和射流风机的出口气流均会破坏烟气-空气分层结构。在隧道内部1 m/s纵向自然风的影响下,面对不同功率火源,射流风机运行模式与人员疏散方向应随之改变。

关键词: 公路隧道, 可逆射流风机, 火灾通风, 人员疏散, FDS

Abstract: With the transformation of highway tunnels from the high-speed construction period to the construction and management period in China, reversible jet fans are widely used in tunnel ventilation systems. In order to explore the influence of the reversible jet fan ventilation operation mode on personnel evacuation in tunnel fire, based on the Guangdong Mountain Tunnel,this paper studies the characteristics of smoke, temperature, CO volume fraction and visibility under different jet fan operation modes with heat release rate of 5 MW and 20 MW in the central area of the tunnel. The results show that the stratified structure of flue gas and air is destroyed by natural wind and jet fan. Under the influence of 1 m/s longitudinal natural wind inside the tunnel, the operation mode of jet fan and evacuation direction of personnel should be changed in the face of different power fire sources.

Key words: highway tunnel, reversible jet fan, fire ventilation, evacuation, FDS