喷淋角度对外立面火蔓延抑制作用的研究  

Study on Effect of Spray Angle on Fire Suppression of Building Facade

作　　者：李媛 赵恒泽 梁磊[1] LI Yuan;ZHAO Heng-ze;LIANG Lei(College of Environment and Safety,Taiyuan University of Science and Technology,Taiyuan 030024,China;College of Mining Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China)

机构地区：[1]太原科技大学环境与安全学院,太原030024 [2]华北理工大学矿业工程学院,河北唐山063210

出　　处：《太原科技大学学报》2022年第5期467-471,共5页Journal of Taiyuan University of Science and Technology

基　　金：山西省应用基础研究计划(201801D121278,201801D221357,201901D211295)。

摘　　要：采用FDS软件针对喷淋角度对外立面火抑制作用的影响进行了模拟实验,得到如下结果:在水平喷淋角度为-30°~30°的情况下,竖直喷淋角度为90°~150°时,水喷淋对外立面下部的保护作用强,可将距地面3 m处温度降低320℃;当竖直喷淋角度为15°~150°时,水喷淋对喷淋位置附近的保护作用强,对距地面(6~7)m处外立面温度降低在60℃左右。在竖直喷淋角度为90°~165°的情况下,水平喷淋角度为-30°~30°时,水喷淋对外立面距地面(3~6)m处的保护作用强,最高降温125℃;当水平喷淋角度位于-60°~60°时,对外立面距地面(7~9)m处的保护作用强,降温量在55℃左右。以上结论对消防工程实践具有重要意义。The inhibition effect of spray angle to external wall fires was studied using FDS software,and some results are obtained.Firstly,when the horizontal spray angle is-30°~30°,water spray has strong effect on the fire extinguishment on the lower part of building facade for the vertical spray angle 90°~150°,which can reduce the temperature at 3 meters from the ground by 320℃.And around the position of nozzle for the vertical spray angle 15°~150°,temperature at(6~7)meters from the ground can reduce 60℃.Second,when the vertical spray angle is 90°~165°,water spray has strong effect on the fire extinguishment at(3~6)meters from the ground and can reduce the temperature by 125℃for the horizontal spray angle-30°~30°.And the temperature can reduce 55℃for spray angle-60°~60°at(7~9)meters on building facade,which may be of great significance to the fire engineering.

关 键 词：FDS 喷淋角度 外立面火 抑制作用 

分 类 号：TU998.1[建筑科学—市政工程]