摘要
文章通过采用试验资料确定温度场,试提出一个较为简单明晰的火风压计算公式。公式表明火风压由三部分组成,烟气的热压差在隧道纵坡较大时占的比例较大,是火风压的主要组成部分;火风压与隧道纵坡成正比关系。文章还结合通风计算算例,发现火灾工况一般不会控制通风设计;提出的计算火风压方法使用方便,原理较为明淅,适合于设计中应用。
By adopting the temperature field determined by experimental data, a relatively concise calculating formula of fire wind pressure was established. It indicated that fire wind pressure was composed of three parts, in which wind pressure caused by thermal difference of smoke constituted a large proportion when the longitudinal slope of the tunnel was large and that fire wind pressure was in proportion to the longitudinal slop. Additionally, by considering the case study of ventilation, it was found that ventilation design would not be controlled by the case of tunnel fire.
出处
《现代隧道技术》
EI
北大核心
2010年第1期17-21,共5页
Modern Tunnelling Technology
关键词
隧道
火风压
计算公式
通风设计
Tunnel
Fire wind pressure, Calculating formula
Ventilation design
