XUYun-hua,ZOULi,CONGBei-hua,et al.Efficiency Testing and Analysis of Common Automatic Fire Extinguishing System in Utility Tunnel[J].China Water & Wastewater,2024,40(15):115-122.
Efficiency Testing and Analysis of Common Automatic Fire Extinguishing System in Utility Tunnel
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第40卷
Number:
第15期
Page:
115-122
Column:
Date of publication:
2024-08-01
- Keywords:
- utility tunnel; dry powder fire extinguishing system; high-pressure water mist fire extinguishing system; internal overload fire source; external gas fire source
- Abstract:
- The utility tunnel serves as a crucial urban infrastructure project, playing a pivotal role in the operation and maintenance of the city. In accordance with the current regulations, it is imperative to install a fire extinguishing system in the cable-containing cabin. The performance, failure capacity and safety of the commonly employed automatic fire extinguishing systems (dry powder fire extinguishing system and high-pressure water mist fire extinguishing system) in utility tunnels were assessed under various experimental conditions involving different fire sources and operational scenarios. Both fire extinguishing systems were capable of rapidly extinguishing fires, but the high-pressure water mist fire extinguishing system offered the advantages of superior cooling effect, leaving no residue at the site, and lower overall life cycle costs, making it more suitable for utility tunnel. In addition, to enhance fire detection sensitivity in the event of a cable short-circuit fire at low temperatures, smoke detectors could be installed in the utility tunnel, and linear temperature sensing cables could be laid on the power cable. Additionally, measures such as reducing the operating temperature of the dry powder fire extinguishing device should be implemented.
Last Update:
2024-08-01