摘要
本文建立了一种描述地下隧道中烟气流动的场模型,并用此模型计算的结果与奥地利Zwenberg隧道的实验数据进行了比较。利用该模型,研究了隧道中不同的燃烧强度以及隧道坡度对烟气流动的影响。结果表明:大约2m/s通风风速即可抑制热烟气向上游流动,而在强制通风的情况下,隧道坡度对烟气流动的影响不大。本课题的研究对于地铁隧道中排烟风机的选择、人群疏散以及地铁中电缆线的铺设均有重要意义。
In this paper a field model for smoke movement is described. Predicted results are compared with the Austrian Zwenberg tunnel test data. With this model, some examples of smoke movement in subway are illustrated, and conclusion is given that the longitudinal ventilation rate should be about 2m/s to prevent hot air from spreading upstream.
出处
《火灾科学》
CSCD
1993年第2期6-13,共8页
Fire Safety Science
基金
This work was supported by the National Natural Science Fund.
