喷淋系统在地铁火灾防治中的实用性研究  

Practical research on sprinkler system in subway fire prevention

作　　者：张冰 丁伟 兰玲 周妍[1] ZHANG Bing;DING Wei;LAN Ling;ZHOU Yan(China Railway Shanghai Design Institute Group Co.,Ltd.,Shanghai 200070,China;China Academy of Safety Science and Technology,Beijing 100012,China;Beijing Key Laboratory of Metro Fire and Passenger Transportation Safety,Beijing 100012,China)

机构地区：[1]中铁上海设计院集团有限公司,上海200070 [2]中国安全生产科学研究院,北京100012 [3]地铁火灾与客流疏运安全北京市重点实验室,北京100012

出　　处：《中国安全生产科学技术》2020年第S01期32-35,共4页Journal of Safety Science and Technology

摘　　要：为确定自动喷水灭火系统在地铁公共区域火灾中的实用性,以上海市某2层岛式车站作为研究对象,采用FDS软件对地铁站台区域火灾进行数值模拟。结合地下车站的特点,在站台层公共区域进行合理的喷头布置;通过改变喷头流量速率、喷射夹角、水颗粒粒径,研究喷淋系统开启后对烟气层稳定性的影响,进而为地铁车站公共区域火灾下人员安全疏散争取必需的安全疏散时间。结果表明:随着喷头喷射速率的增大,喷淋覆盖区域内的烟气沉降加大;在保持喷射速率不变的情况下,烟气稳定性随着喷射夹角和水颗粒粒径的减小而减弱。In order to determine the practicability of sprinkler system in subway public area fire,this paper takes a two-story island station in Shanghai as the research object,and uses FDS software to simulate the fire in subway platform area.Combined with the characteristics of underground station,reasonable sprinkler layout is carried out in the public area of platform.By changing the sprinkler flow rate,spray angle and water particle size,the influence of sprinkler system on the stability of smoke layer was studied,so as to obtain the necessary safety evacuation time for the safety evacuation of personnel in the public area of the subway station under fire.The results show that with the increase of spray rate,the flue gas settlement in the spray coverage area increases.Under the condition of constant injection rate,the flue gas stability decreases with the decrease of injection angle and water particle size.

关 键 词：地下车站 自动喷水灭火系统 烟气层高度 稳定性 

分 类 号：U231.96[交通运输工程—道路与铁道工程]