[1]吴博文,陈长坤,焦伟冰,等.隧道路面横坡对流淌火燃烧蔓延规律影响的实验研究*[J].中国安全生产科学技术,2024,20(6):11-16.[doi:10.11731/j.issn.1673-193x.2024.06.002]
WU Bowen,CHEN Changkun,JIAO Weibing,et al.Experimental study on influence of ground transverse slope on combustion and spread law of spill fire in tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(6):11-16.[doi:10.11731/j.issn.1673-193x.2024.06.002]
点击复制
隧道路面横坡对流淌火燃烧蔓延规律影响的实验研究*
WU Bowen,CHEN Changkun,JIAO Weibing,et al.Experimental study on influence of ground transverse slope on combustion and spread law of spill fire in tunnel[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(6):11-16.[doi:10.11731/j.issn.1673-193x.2024.06.002]
《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]
- 卷:
- 20
- 期数:
- 2024年6期
- 页码:
- 11-16
- 栏目:
- 特邀专栏
- 出版日期:
- 2024-06-30
文章信息/Info
- Title:
- Experimental study on influence of ground transverse slope on combustion and spread law of spill fire in tunnel
- 文章编号:
- 1673-193X(2024)-06-0011-06
- 分类号:
- U458；X932
- 文献标志码:
- A
- 摘要:
- 为探究地面横坡对隧道流淌火燃烧蔓延规律和温度场分布特征的影响，搭建缩尺寸隧道模型开展研究。研究结果表明：当泄漏速率较小时，有横坡的隧道流淌火的燃烧扩散可分为4个阶段，分别为燃烧横向扩散阶段、回缩阶段、燃烧稳定阶段以及熄灭阶段；当泄漏速率较小时，流淌火仅存在横向扩散阶段，而当泄漏速率较大时，在燃料横向扩散阶段之后会形成贴壁纵向扩散，进而形成隧道内的“T型火”。通过理论分析建立相应的流淌火横向扩散距离以及纵向扩散距离的理论预测模型。此外，当泄漏速率较小时，隧道顶棚高温区域在隧道中心。当形成“T型火”时，火焰贴壁一侧的温度明显高于隧道中心线温度。研究结果可为隧道流淌火火灾的探测设计提供理论支撑。
- Abstract:
- In order to investigate the influence of ground transverse slope on the combustion and spread law and the temperature field distribution characteristics of spill fire in tunnel,a reduced-size tunnel model was constructed to carry out the study.The results show that when the leakage rate is small,the combustion diffusion of spill fire in tunnel with transverse slope can be divided into four stages,which are the combustion transverse diffusion stage,the retraction stage,the combustion stabilization stage,and the extinguishing stage.When the leakage rate is smaller,there is only a transverse diffusion stage of the spill fire,and when the leakage rate is larger,the longitudinal diffusion adhering to the wall will be formed after the transverse diffusion stage of fuel,thus forming the “T-shape fire” in the tunnel.Through theoretical analysis,the corresponding theoretical prediction models of transverse diffusion distance and longitudinal diffusion distance of spill fire are established.In addition,when the leakage rate is small,the high temperature region of the tunnel roof is in the center of the tunnel.When a “T-shaped fire” is formed,the temperature on the wall side of flame is significantly higher than the temperature at the centerline of tunnel.The research results can provide theoretical support for the detection design of spill fire in tunnels.
参考文献/References:
［1］LI H H,LIU H Q,LIU J H,et al.Spread and burning characteristics of continuous spill fires in a tunnel［J］.Tunnelling and Underground Space Technology,2021,109:103754.
［2］INGASON H,LI Y Z.Spilled liquid fires in tunnels［J］.Fire Safety Journal,2017,91:399-406.
［3］GOTTUK D,SCHEFFEY J,WILLIAMS F,et al.Optical fire detection (OFD) for military aircraft hangars:final report on OFD performance to fuel spill fires and optical stresses［R］.Washington,DC:Naval Research Laboratory,May 2000.
［4］MEALY C,BENFER M,GOTTUK D T.Liquid fuel spill fire dynamics［J］.Fire Technology,2014,50:419-436.
［5］PUTORTI A D,MCELROY J A,MADRZYKOWSKI D M.Flammable and combustible liquid spill burn patterns (NIJ Report 604-00)［R］.Washington,DC:National Institute of Justice Office of Science and Technology,March 2001.
［6］刘全义,杨锐,张辉.大尺度正庚烷流淌火试验［J］.河南科技大学学报(自然科学版),2017,38(6):95-99.
LIU Quanyi,YANG Rui,ZHANG Hui.Experiment of large scale n-heptane spill fire［J］.Journal of Henan University of Science and Technology (Natural Science),2017,38(6):95-99.
［7］LI Y T,HUANG H,ZHANG L H,et al.An experimental investigation into the effect of substrate slope on the continuously released liquid fuel spill fires［J］.Journal of Loss Prevention in the Process Industries,2017,45:203-209.
［8］ZHAO J L,ZHU H Q,HUANG H,et al.Experimental study on the liquid layer spread and burning behaviors of continuous heptane spill fires［J］.Process Safety and Environmental Protection,2019,122:320-327.
［9］LI M H,LU S X,CHEN R Y,et al.Pulsating behaviors of flame spread across n-butanol fuel surface［J］.Applied Thermal Engineering,2016,112:1445-1451.
［10］LI M H,LU S X,GUO J,et al.Effects of pool dimension on flame spread of aviation kerosene coating on a metal substrate［J］.International Journal of Heat and Mass Transfer,2015,84:54-60.
［11］HU L H,HUO R,LI Y Z,et al.Full-scale burning tests on studying smoke temperature and velocity along a corridor ［J］.Tunnelling and Underground Space Technology,2005,20:223-229.
相似文献/References:
备注/Memo
- 备注/Memo:
-
收稿日期： 2024-04-07
* 基金项目： 国家自然科学基金项目（52274250）
作者简介： 吴博文，本科生，主要研究方向为隧道火灾。
通信作者： 陈长坤，博士，教授，主要研究方向为火灾科学与消防工程。
