狭长通道内细水雾型水幕阻烟性能实验研究  

Experimental research on properties of smoke blocked by water mist screen in a long narrow channel

作　　者：梁强[1,2] 李炎锋[1] 李俊梅[1] LIANG Qiang;LI Yanfeng;LI Junmei(College of Architecture and Civil Engineering, Beijing University of Technology, Beijing 100124, China;Department of Fire Command, Chinese People′s Armed Police Forces Academy, Langfang 065000, China)

机构地区：[1]北京工业大学建筑工程学院,北京100124 [2]中国人民武装警察部队学院消防指挥系,河北廊坊065000

出　　处：《哈尔滨工程大学学报》2017年第11期1751-1756,共6页Journal of Harbin Engineering University

基　　金：国家自然科学基金项目(51278018);公安部灭火救援技术重点实验室开放课题(KF201408)

摘　　要：针对阻止狭长通道内火灾烟气水平蔓延的问题,本文提出利用细水雾型水幕防烟分隔方法,搭建实验台研究细水雾型水幕在狭长通道中阻烟的效果。通过分析烟气蔓延过程,测量温度分布,O2、CO2和CO浓度变化以及通道内照度变化,讨论狭长通道内细水雾型水幕阻烟的有效性。实验结果表明:细水雾开启后,其下游空间环境得到改善,可以满足安全疏散的环境要求,狭长空间内细水雾型水幕的阻烟性能良好。实验为狭长通道(隧道、长走廊)的防排烟设计提供了思路,对火场救援和人群疏散具有重要意义。A new smoke control strategy using a water mist screen was developed to block horizontal smoke movement in a long narrow channel.Experiments were conducted to investigate the properties of smoke blockage realized by the water mist screen,and certain parameters were analyzed to confirm its effectiveness in blocking fire induced smoke,such as the smoke movement process,distribution of temperature,concentrations of O2,CO2,and CO,and changes in visibility.Experimental results show that after the water mist is activated,the downstream space environment is improved and meets safe evacuation requirements.Additionally,the smoke blocking effect of the water mist screen is excellent in the long narrow channel.This experiment provides a basis for designing smoke prevention and emission strategies in narrow and long channels(tunnels or long corridors),which is significantly important in enabling mass evacuation and fire rescue.

关 键 词：火灾 狭长通道 细水雾 细水雾型水幕 烟气扩散 烟气控制 

分 类 号：X932[环境科学与工程—安全科学] X913.4