主管：中华人民共和国应急管理部
主办：应急管理部天津消防研究所
ISSN 1009-0029  CN 12-1311/TU
消防科学与技术

消防科学与技术 ›› 2020, Vol. 39 ›› Issue (2): 228-231.

• • 上一篇    下一篇

管廊风速对细水雾系统灭火效果影响研究

王致远1，李炎锋1，王红艺1，端木祥玲2   

  1. （1.北京工业大学 绿色建筑与节能技术重点实验室，北京 100124；2.中国建筑科学研究院有限公司建筑防火研究所，北京 100013）
  • 收稿日期:2019-09-20 出版日期:2020-02-15 发布日期:2020-02-15
  • 通讯作者: 李炎锋(1971-)，男，北京工业大学教授。
  • 作者简介:王致远(1994-)，男，北京工业大学绿色建筑与节能技术重点实验室硕士研究生，主要从事建筑节能及火灾安全技术研究，北京市朝阳区平乐园100号，100124。
  • 基金资助:
    国家重点研发计划项目(2017YFC0805008)

Influence of wind speed on fire suppression of water mist in pipe gallery

WANG Zhi-yuan1, LI Yan-feng1, WANG Hong-yi1, DUAN MU Xiang-ling2   

  1. (1. College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China; 2. Building Fire Research Institute, China Academy of Building Research, Beijing 100013, China）
  • Received:2019-09-20 Online:2020-02-15 Published:2020-02-15

摘要： 建立等比例综合管廊数值模型，采用FDS模拟了通风风速为0、0.4、0.8、1.2 m/s下电缆舱着火工况的细水雾灭火效果，分析风速对灭火效果的影响以及纵向通风与细水雾共同作用下的烟气蔓延情况。结果表明，随着通风风速的增加，尽管管廊内部的含氧量增加，但火源及正上方温度下降，很大程度上减缓了火源竖向发展趋势。研究结果证明了高压细水雾灭火系统的有效性。城市综合管廊采用细水雾系统时，施加不高于1.2 m/s风速的通风气流对细水雾灭火更为有利。

关键词: 综合管廊, 高压细水雾, 灭火效果, 数值模拟

Abstract: Numerical model of equal proportion comprehensive pipe gallery was established and the fire suppression of the cable cabin fire by water mist under the ventilation speeds of 0, 0.4, 0.8 and 1.2 m/s was simulated by FDS. The influence of wind speed on fire extinguishing and the smoke spread under the combined action of longitudinal ventilation and water mist were researched. The results showed that with the increase of longitudinal ventilation wind speed, although the oxygen content in the tunnel increases, the temperature at and above the fire source drops, which greatly reduces the vertical development trend of the fire source. The effectiveness of the high pressure water mist fire extinguishing system is proved by the results. When the water mist system is used in the urban comprehensive pipe gallery, it is more advantageous to apply the ventilation airflow with the wind speed no higher than 1.2 m/s to extinguish the fire by water mist.

Key words: utility tunnel, high pressure water mist, fire suppression effect, numerical simulation