密闭增压补氧舱泄压过程中的木垛燃烧特性研究
Study on the Burning Performance of Wood Cribs During Pressure Relief Process of Closed Pressurized Oxygen-supplement Compartments
刘志茂 1刘卫军 1文康 1姜辉 1张俊 2姚斌2
作者信息
- 1. 中国建筑先进技术研究院,湖北 武汉 430075
- 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
- 折叠
摘要
为探究增压补氧舱泄压时间对人员安全疏散的影响,通过增压补氧舱的泄压试验对舱体泄压时压力与时间的关系进行验证.对比模拟与真实泄压曲线,验证了泄压理论公式适用于增压补氧舱的泄压过程计算.模拟高海拔条件下增压补氧舱的泄压过程,结果表明:使用1 个DN20、2 个DN40 和1 个DN65 规格的泄压阀可满足此类建筑安全疏散的要求.当密闭增压建筑中某房门未紧闭的标准舱室内发生4 层木垛燃烧后,若能及时对建筑进行整体泄压,对标准舱外公共区域的人员疏散影响较小.研究成果可为高海拔密闭增压建筑的推广应用提供参考.
Abstract
In order to investigate the impact of the depressurization time of the pressurized oxygen-supplement compart-ments for pedestrian evacuation,this study verified the theoretical relationship between pressure and time during cabin depressur-ization.Depressurization tests were conducted with pressurized oxygen-supplement compartments.From the comparison depres-surization curves from experiments and simulation,it confirmed that the depressurization theory is capable to calculate the depres-surization process of the pressurized oxygen supplement compartments.Furthermore,the pressure relief process of pressurized ox-ygen chamber at high altitude was simulated.The results showed that the use of 1 DN20,2 DN40,and 1 DN65 pressure relief valves can meet the requirements of safe evacuation of such buildings.In the case that the fuel like the 4-layer wooden in the experiment burns in a room with an open door in a closed compartment,there will be small influence on the pedestrian evacuation in the public areas outside the room,if the whole compartment can release pressure in a timely manner.The results of this study can provide reference for the application of high-altitude enclosed pressurized buildings.
关键词
高海拔/密闭增压建筑/泄压过程/模拟分析/燃烧实验Key words
high altitude/pressurized oxygen-supplement compartments/depressurization/simulation/fire experiment引用本文复制引用
出版年
2024
NETL
NSTL
维普
万方数据