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[1]方祥,任飞,李建,等.不同隧道坡度与车厢火灾位置情况下烟气蔓延特性研究*[J].中国安全生产科学技术,2022,18(9):35-40.[doi:10.11731/j.issn.1673-193x.2022.09.005]
　FANG Xiang,REN Fei,LI Jian,et al.Study on smoke spread characteristics under different tunnel slopes and car fire locations[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2022,18(9):35-40.[doi:10.11731/j.issn.1673-193x.2022.09.005]
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不同隧道坡度与车厢火灾位置情况下烟气蔓延特性研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
18
期数:
2022年9期
页码:
35-40
栏目:
学术论著
出版日期:
2022-09-30

文章信息/Info

Title:
Study on smoke spread characteristics under different tunnel slopes and car fire locations
文章编号:
1673-193X(2022)-09-0035-06
作者:
方祥; 任飞; 李建; 车洪磊; 钱小东; 唐飞
（1.中国安全生产科学研究院 地铁火灾与客流疏运安全北京市重点实验室，北京 100012；
2.中国科学技术大学 火灾科学国家重点实验室，安徽 合肥 230026）
Author(s):
FANG Xiang;  REN Fei;  LI Jian;  CHE Honglei;  QIAN Xiaodong;  TANG Fei
(1.Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety,China Academy of Safety Science and Technology,Beijing 100012,China;
2.State Key Laboratory of Fire Science,University of Science and Technology of China,Hefei Anhui 230026,China)
关键词:
隧道坡度; 火源位置; 火灾烟气; 温度分布; 烟气逆流
Keywords:
tunnel slope;  fire source location;  fire smoke;  temperature distribution;  smoke back-layering
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2022.09.005
文献标志码:
A
摘要:
为研究含坡度隧道不同火源位置情况下车厢火灾烟气蔓延特性，采用CFD数值模拟方法，建立全尺寸地铁隧道与列车数值模型，研究车厢不同火源位置情况下火灾烟气纵向温度分布规律，探讨倾斜隧道车厢火源位置对烟气蔓延的影响。研究结果表明：当火灾烟气蔓延处于纵向通风惯性力与热浮力竞争作用控制阶段时，火源位于车厢上游方向时火灾烟气向车厢方向蔓延距离小于火源位于车厢下游方向情况，且随坡度增大，火源位于车厢上游方向烟气逆流长度不断减小，位于下游方向烟气逆流长度不断增大；当纵向通风风速达到2 m/s时，火源位于车厢上下游方向2种情况下，列车车厢方向均无烟气蔓延（逆流长度为0），此时火灾烟气蔓延将主要由纵向通风控制，隧道坡度无显著影响。
Abstract:
In order to study the characteristics of smoke spread in the car fire with different fire source locations in the tunnel with slope,a full-scale numerical model of subway tunnel and car was established by using the CFD numerical simulation method.The longitudinal temperature distribution of fire smoke in different fire source locations of car was studied,and the influence of fire source location in the car with an inclined tunnel on the smoke spread was discussed.The results showed that when the fire smoke spread was in the competitive control stage of longitudinal ventilation inertia force and thermal buoyancy,the spread distance of fire smoke to the car direction when the fire source was located at the upstream direction of car was less than that when the fire source was located at the downstream direction of car,and with the increase of the slope,the smoke back-layering length decreased when the fire source was located at the upstream of car,while the smoke back-layering length increased when the fire source was located at the downstream of car.When the longitudinal ventilation wind speed reached 2 m/s,there was no smoke spread in the car direction (with back-layering length of 0),no matter the fire source was located at the upstream direction and downstream direction of car.At this time,the fire smoke spread would be mainly controlled by the longitudinal ventilation,and the tunnel slope had no significant influence.

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备注/Memo

备注/Memo:
收稿日期： 2021-07-22
* 基金项目： 国家自然科学基金青年科学基金项目(52006204)；火灾科学国家重点实验室开放课题项目（HZ2020-KF06）；中国安全生产科学研究院基本科研业务专项资金项目（2021JBKY08）
作者简介： 方祥，博士，主要研究方向为建筑火灾动力学。
通信作者： 任飞，博士，工程师，主要研究方向为受限空间火灾。
更新日期/Last Update: 2022-10-14