今日消防2023，Vol.8Issue(12)：8-10,3.
纵向通风下障碍物对隧道火灾燃烧速率的影响研究
Influence of obstacles on the burning rate of tunnel fire under longitudinal ventilation
摘要
Abstract
Using the method of model tunnel experiment,the change law of pool fire burning rate under different longitudinal ventilation speeds and obstacle distances is studied.The results show that under the condition of longitudinal ventilation,the burning rate of pool fire is the highest when the distance of obstacles is 5 cm.When the obstacle distance is constant,the burning rate of pool fire increases with the increase of longitudinal ventila-tion speed.When the obstacle distance is within a certain range,the burning rate of pool fire is higher than that of unobstructed objects.When the obstacle distance exceeds a certain range,the burning rate of pool fire is not much different from that of unobstructed objects.The influence of the existence of obstacles on the burning rate of pool fire is mainly attributed to the side wall radiation effect and the change of airflow field.The influence of longi-tudinal ventilation on pool fire combustion is more obvious.When the obsta-cle distance changes,the airflow field will change the inclination direction of the flame,and then change the side wall radiation effect.These findings have certain guiding significance for in-depth understanding of tunnel fire characteristics,optimizing fire safety design and formulating effective fire prevention and control measures.关键词
纵向通风/燃烧速率/障碍物/辐射效应Key words
longitudinal ventilation/burning rate/obstacle/radiation ef-fect分类
社会科学引用本文复制引用
张波,陈丽霞,马隽湫,贾天耀,李海航..纵向通风下障碍物对隧道火灾燃烧速率的影响研究[J].今日消防,2023,8(12):8-10,3.基金项目
浙江省基础公益研究计划项目(LGF21E040001) （LGF21E040001）
中国科学技术大学火灾科学国家重点实验室开放课题(HZ2022-KF02) （HZ2022-KF02）
中国计量大学科研业务费项目(2022YW18). （2022YW18）
