|本期目录/Table of Contents|

[1]吴陈燕,石必明,彭伟,等.半横向排烟下公路隧道火灾烟气逆流长度规律研究*[J].中国安全生产科学技术,2021,17(4):92-97.[doi:10.11731/j.issn.1673-193x.2021.04.015]
 WU Chenyan,SHI Biming,PENG Wei,et al.Study on smoke back-layering length in highway tunnel fire under semi-transverse smoke exhaust[J].JOURNAL OF SAFETY SCIENCE AND TECHNOLOGY,2021,17(4):92-97.[doi:10.11731/j.issn.1673-193x.2021.04.015]
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半横向排烟下公路隧道火灾烟气逆流长度规律研究*
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《中国安全生产科学技术》[ISSN:1673-193X/CN:11-5335/TB]

卷:
17
期数:
2021年4期
页码:
92-97
栏目:
职业安全卫生管理与技术
出版日期:
2021-04-30

文章信息/Info

Title:
Study on smoke back-layering length in highway tunnel fire under semi-transverse smoke exhaust
文章编号:
1673-193X(2021)-04-0092-06
作者:
吴陈燕石必明彭伟钟珍刘义
(安徽理工大学 安全科学与工程学院,安徽 淮南 232001)
Author(s):
WU Chenyan SHI Biming PENG Wei ZHONG Zhen LIU Yi
(School of Safety Science and Engineering,Anhui University of Science and Technology,Huainan Anhui 232001,China)
关键词:
半横向排烟隧道火灾烟气逆流长度烟气流动
Keywords:
semi-transverse smoke exhaust tunnel fire smoke backlayering length smoke flow
分类号:
X932
DOI:
10.11731/j.issn.1673-193x.2021.04.015
文献标志码:
A
摘要:
为研究不同因素对半横向排烟模式下公路隧道火灾烟气逆流长度的影响规律,采用理论分析推导火灾烟气逆流长度与火源功率、排烟速度、排烟口面积和排烟口间距4个因素的无量纲关系式,运用数值模拟研究不同因素下火灾烟气的运动规律,最后拟合得到烟气逆流长度的无量纲关系式。结果表明:在半横向排烟模式下,烟气逆流长度随火源功率的增大而增大,呈正相关关系;随排烟速度的增大而减小,随排烟口面积增大而减小,随排烟口间距的增大而减小,呈负相关关系;对数值模拟的结果进行拟合,得到相应的烟气逆流长度无量纲关系式。研究结果有助于了解半横向排烟模式下烟气流动规律及控制原理。
Abstract:
In order to study the influence of different factors on the smoke back-layering length in the highway tunnel fire under the semi-transverse smoke exhaust mode,the dimensionless relational expressions between the fire smoke backlayering length and four factors including the fire source power,smoke exhaust speed,smoke vent area and smoke vent spacing were deduced through the theoretical analysis.The movement laws of fire smoke under different factors were studied by numerical simulation,and finally the dimensionless relational expression of smoke backlayering length was obtained by fitting.The results showed that under the semitransverse smoke exhaust mode,the smoke backlayering length increased with the increase of fire source power,presenting a positive correlation,while it decreased with the increase of smoke exhaust speed,smoke vent area and smoke vent spacing,presenting a negative correlation.The results of numerical simulation are fitted to obtain the corresponding dimensionless relationship of flue gas countercurrent length.The research results are helpful to understand the smoke flow laws and control principles under the semi-transverse smoke exhaust mode.

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备注/Memo

备注/Memo:
收稿日期: 2020-12-27
* 基金项目: 国家重点研发计划项目(2018YFC0808101);国家自然科学基金项目(51874008,51474010,51504009);安徽省自然科学基金项目(1608085QE114);安徽理工大学2020年研究生创新基金项目(2020CX2018)
作者简介: 吴陈燕,硕士研究生,主要研究方向为火灾安全。
更新日期/Last Update: 2021-05-09