新型箱式水幕系统在地铁火灾中的应用及设计

Application and Design of New Box-Type Water Curtain System in Subway Fires

随着经济的发展和人口的增多,地铁作为人们出行的交通工具的重要性越来越被人们所重视。而且地铁火灾的发生率及严重的损失同样令人担忧。因此,地铁中的消防系统则举足轻重。但是,目前传统的消防分区及消防设施都不适合在地铁火灾中使用,而新型箱式水幕系统是较适用于地铁火灾中的一种消防系统。为了得到均匀水幕,利用流体力学计算软件CFX4进行数值计算,对水幕箱体外形及内部结构进行设计,分析其对水幕质量的影响。通过对外形及结构上的改进,可以得到出水效果较均匀的水幕。同时,对新型箱式水幕系统的用水量与传统水幕进行了比较,证明其是一种节约水资源的消防设施。

With the economic development and population increase, the subway is more and more important as a transportation vehicle. However, the accident rate of subway fire and its serious damages are worrisome. Therefore, the fire prevention system in subway is pivotal. But at present, the traditional fire compartmentalization and facilities are no longer suitable for the subway, whereas the new box-type water curtain system is more suitable in the subway fire. In order to obtain an even water curtain, the paper computes values with the hydromechanics computation software CFX4, designs the shape and internal structure of the water curtain boxes, analyses their influence on the water curtain＇ s quality. By improving the shape and structure, we can make the flow of water in the muzzle more even. Meanwhile, a comparison between the water usage of the new box-type water curtain system and that of the traditional water curtain proves the new system is one kind of water-saving fire prevention facilities.