摘要
Abstract
Taking the Liuyanghe Tunnel on the Wuhan-Guangzhou high-speed railway and the Xiaoshan Tunnel on the coal transportation railway from West Inner Mongolia to Central China as examples, this paper discussed the key technology of fire protection design for long railway tunnels. Meanwhile, this paper analyzed the characteristics of fire hazard in long railway tunnels, such as: the fire grows uncertainly and is prone to re-burning, the heat generated by fire is not easily distributed, the temperature rises quickly with big smog, it is difficult for the rescue equipment and personnel to approach fire scene, the indirect loss is great, and so on. And then, after analyzing the fire-extinguishing mechanism and components of both high pressure water mist system and superfine dry powder self-extinguishing device system, this paper respectively proposed the design parameters for both high pressure water mist system and superfine dry powder self-extinguishing device system, used in disaster prevention and rescue centers and used in equipment caverns of long railway tunnels. This study result can serve as a reference, for the design of similar projects and for the revising of the book titled The Code for fire Protection Design of Railway Engineering.关键词
铁路长大隧道/消防设计/高压细水雾/超细干粉自动灭火装置Key words
long railway tunnel/fire protection design/high pressure water mist/superfine dry powder self-extinguishing device分类
交通工程
