| Issue |
E3S Web Conf.
Volume 356, 2022
The 16th ROOMVENT Conference (ROOMVENT 2022)
|
|
|---|---|---|
| Article Number | 02047 | |
| Number of page(s) | 4 | |
| Section | Underground Environment and Specialized Application | |
| DOI | https://doi.org/10.1051/e3sconf/202235602047 | |
| Published online | 31 August 2022 | |
Study on the Influence of the Slope Composition of the V-shaped Tunnel on the Smoke Exhaust Efficiency of the Point Exhaust System
1 Beijing General Municipal Engineering Design & Research Institute, Beijing 100124, China
2 Beijing Key Laboratory of Green Built Environment and Energy Efficient Technology, Beijing Uinversity of Technology, Beijing 100124, China
3 Beijing Academy of Science and Technology, Lab of safety and emergency management, Beijing 100000, China
* corresponding author: lijunmei@bjut.edu.cn
The influences of the slope composition on both sides of the variable slope point and the opening numbers of the exhaust vent on the smoke diffusion and the smoke and heat exhaust efficiency in V-shaped tunnel were investigated by the numerical method. The results showed that for the asymmetric V-shaped tunnel, increasing the number of exhaust vents on the large slope side can improve the smoke and heat exhaust efficiency, but control the smoke in a smaller rang is relatively difficult. The corresponding smoke exhaust vent opening strategy should be drawn up in accordance with the composition of the slope of the V-shaped tunnel and the goal of the smoke control system in practice.
Key words: V-shaped tunnel / smoke exhaust / fire / smoke spread
© The Authors, published by EDP Sciences, 2022
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