重庆科技大学学报（自然科学版）2025，Vol.27Issue(4)：50-59,10.DOI:10.19406/j.issn.2097-4531.2025.04.006
深埋车站长出入口通道空气幕防烟性能研究
Study on Smoke Control Performance of Air Curtain in Long Access Passage of Deeply Buried Station
钱跃东 1翁庙成1
作者信息
- 1. 重庆大学 土木工程学院,重庆 400045
- 折叠
摘要
Abstract
Based on the structural characteristics of a deeply buried station,a full-scale numerical model was estab-lished.Fire Dynamics Simulator(FDS)software was employed to analyze the regulation mechanism of air curtain jet parameters on smoke diffusion under a fire source power of 2 MW.Boundary conditions included a jet length of 8 m and a jet width of 0.3 m.Evaluation metrics,namely the temperature gradient across the air curtain and the temperature rise within the protected zone,were introduced.The evolution of the temperature field under varying jet angles and jet velocities was systematically investigated.Simulation results demonstrate that an effective smoke barrier can be formed by the air curtain when the jet angle ranges from 15° to 30° and the jet velocity is between 5 m/s and 7 m/s,given the 2 MW fire.Optimizing the air curtain jet parameters can reconfigure the thermal pres-sure distribution within the confined space,thereby suppressing the stack effect.The synergistic effect of the jet angle and jet velocity can prevent smoke from intruding into the long access passage,which is of great significance for ensuring the safety of personnel evacuation.关键词
深埋车站/长出入口通道/空气幕/射流速度/射流角度Key words
deeply buried station/long access passage/air curtain/jet velocity/jet angle分类
资源环境引用本文复制引用
钱跃东,翁庙成..深埋车站长出入口通道空气幕防烟性能研究[J].重庆科技大学学报（自然科学版）,2025,27(4):50-59,10.
