摘要
为研究线型火源火灾温度场在综合管廊内的分布规律,在一全长11.5 m、内径1.5 m、外径1.8 m的管廊模型中开展了4种不同长宽比的油池火实验,运用Origin软件对温度数据进行分析。结果表明,随着火源当量直径减小,管廊内的最高温度逐渐降低;不同火源条件下,烟气温度均呈现幂函数衰减;火源长宽比越大,管廊内横向温度分布越平缓,横向温度分布存在界点,在界点两侧,温度大致呈线性分布。
In order to study the distribution law of fire temperature field of linear fire source in the comprehensive pipe gallery,four fire tests of oil pool with different length-width ratios were carried out in a pipe gallery model with a length of 11.5 m,an inner diameter of 1.5 m and an outer diameter of 1.8 m.Origin software was used to analyze the temperature data.The experimental results showed that with fire equivalent diameter decreased,the highest temperature in the pipe gallery gradually reduced;the flue gas temperature decreased with power function under different fire sources.The larger the fire source’s length-width ratio was,the smoother the transverse temperature distribution in the pipe gallery.There was a boundary point in the transverse temperature distribution.On both sides of the boundary point,the temperature distribution was roughly linear.
作者
梁震寰
朱国庆
田承飞
LIANG Zhen-huan;ZHU Guo-qing;TIAN Cheng-fei(Jiangsu Key Laboratory of Fire Safety in Urban Underground Space,China University of Minging and Technology,Jiangsu Xuzhou 221116,China;Key Laboratory of Gas and Fire Control for Coal Mines,China University of Mining and Technology,Jiangsu Xuzhou 221116,China;Fire Research institute,China University of Mining and Technology,Jiangsu Xuzhou 221116,China)
出处
《消防科学与技术》
CAS
北大核心
2018年第12期1635-1637,1641,共4页
Fire Science and Technology
基金
国家重点研发计划项目"公共安全风险防控与应急技术装备重点专项"(2016YFC0802900)
关键词
综合管廊
火灾烟气
温度分布
火灾实验
线型火源
integrated pipe gallery
fire smoke
temperature distribution
fire experiment
linear fire source
