天花板(云)
舱室(船)
通风(建筑)
环境科学
耐火试验
点火系统
自然通风
防火
结构工程
工程类
地质学
机械工程
土木工程
海洋学
航空航天工程
作者
Zhenpeng Bai,Haowei Yao,H H Zhang
出处
期刊:PLOS ONE
[Public Library of Science]
日期:2022-04-08
卷期号:17 (4): e0266773-e0266773
被引量:2
标识
DOI:10.1371/journal.pone.0266773
摘要
The fire characteristics under natural ventilation in the cable compartment of the utility tunnel are studied. A series of small-scale fire experimental tests are conducted to obtain the maximum temperature below the ceiling of different ignition vertical heights and cable types. In this paper, the ceiling temperature decay and heat release rate (HRR) are studied in the cable compartment of utility tunnel. Through experimental tests, the fire characteristics of placing the fire source on the near wall side 3.0 m away from the shaft of the utility tunnel cable compartment are studied. The results showed that under the action of natural ventilation, with the decrease of fuel quantity, the mass loss of cable decreases, and the maximum temperature below the ceiling of the cable compartment in the utility tunnel decreases. ZRYJV cables burn more sufficient combustion than RVVR cables. A new empirical association for total HRR is proposed. Those experimental test results are used as validation data for the newly proposed empirical correlation of total HRR. This paper hopes to provide some basic fire safety references for the utility tunnel planning of the urban underground cable compartment.
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