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[1]刘毅,冯子良,彭飞,等.火源深度对深井立式空间火灾烟气流动特性及火灾探测方式的影响分析*[J].中国安全生产科学技术,2024,20(1):86-92.[doi:10.11731/j.issn.1673-193x.2024.01.013]
　LIU Yi,FENG Ziliang,PENG Fei,et al.Analysis of influence of fire source depth on smoke flow characteristics and fire detection methods in deep well vertical space fire[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(1):86-92.[doi:10.11731/j.issn.1673-193x.2024.01.013]
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火源深度对深井立式空间火灾烟气流动特性及火灾探测方式的影响分析*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
20
期数:
2024年1期
页码:
86-92
栏目:
职业安全卫生管理与技术
出版日期:
2024-01-31

文章信息/Info

Title:
Analysis of influence of fire source depth on smoke flow characteristics and fire detection methods in deep well vertical space fire
文章编号:
1673-193X(2024)-01-0086-07
作者:
刘毅; 冯子良; 彭飞; 雷鹏
（1.中铁第四勘察设计院集团有限公司，湖北 武汉 430063；
2.武汉理工大学 安全科学与应急管理学院，湖北 武汉 430070）
Author(s):
LIU Yi;  FENG Ziliang;  PENG Fei;  LEI Peng
(1.China Railway Siyuan Survey and Design Group Co.,Ltd.,Wuhan Hubei 430063,China;
2.School of Safety Science and Emergency Management,Wuhan University of Technology,Wuhan Hubei 430070,China)
关键词:
深井立式空间火灾; 烟气流动特性; 火源深度; 数值模拟
Keywords:
deep well vertical space fire;  smoke flow characteristics;  fire source depth;  numerical simulation
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2024.01.013
文献标志码:
A
摘要:
为掌握深井立式车库、深地矿井等深井立式空间内火灾烟气运动规律，进而对此类火灾进行预警，以某深井地下车库为原型，构建深井立式空间模型，通过数值模拟分析火源深度和热释放速率对深井立式空间火灾烟气流动特性的影响，并掌握温度场和速度场的变化规律。研究结果表明：当火源深度足够大时，由于向上的浮力和速度减小，烟气可能无法到达井口，火源位置越深，其上方热烟气温度越高；并且火源深度对烟气流动的影响存在临界值，即临界深度，当火源高于临界深度时，火源可以从深井出口外卷吸空气，当火源低于临界深度时，火源仅能从深井内部卷吸空气。研究结果可为深井立式空间火灾的预测预警提供科学参考。
Abstract:
In order to understand the fire smoke flow characteristics of deep well vertical spaces such as deep well vertical garages and deep underground mines,and to provide early warning for such fires,a deep well vertical space model was constructed using a certain deep well underground garage as a prototype.The influence of fire source depth and heat release rate on the smoke flow characteristics of deep well vertical space fire was analyzed through numerical simulation,and the changes in temperature and velocity fields were mastered.The results show that when the depth of fire source is large enough,the smoke may not reach the wellhead due to the decrease in upward buoyancy and velocity.The deeper the fire source is,the higher the temperature of hot smoke above it.There is a critical value for the influence of fire source depth on the smoke flow,that is,the critical depth.When the fire source is higher than the critical depth,the fire source can entrain air from the exit of deep well.When the fire source is below the critical depth,the fire source can only entrain air from the interior of deep well.On this basis,the selection and layout optimization methods of fire detectors suitable for deep well vertical spaces are discussed.The research results can provide scientific reference for the prediction and warning of deep well vertical space fires.

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相似文献/References:

[1]梁文艳,雷鹏,吕伟.不同宽高比下深井立式空间火灾烟气蔓延的数值模拟分析*[J].中国安全生产科学技术,2024,20(7):94.[doi:10.11731/j.issn.1673-193x.2024.07.013]
　LIANG Wenyan,LEI Peng,LYU Wei.Numerical simulation analysis on smoke spread of fire in deep vertical space with different aspect ratios[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2024,20(1):94.[doi:10.11731/j.issn.1673-193x.2024.07.013]

备注/Memo

备注/Memo:
收稿日期： 2023-08-02
* 基金项目： 河南省瓦斯地质与瓦斯治理重点实验室——省部共建国家重点实验室培育基地开放基金项目(WS2022B06)；中央高校基本科研业务费专项资金资助项目(233161001)
作者简介： 刘毅，硕士，高级工程师，主要研究方向为市政交通及其延伸项目的供配电与自动化设计。
通信作者： 雷鹏，博士，讲师，主要研究方向为地下空间火灾烟气流动及控制、城市公共安全与应急救援。
更新日期/Last Update: 2024-02-19