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 ›› 2022, Vol. 41 ›› Issue (10): 1419-1424.

• • 上一篇    下一篇

防火封堵对综合管廊内液氮灭火效能影响研究

贾伯岩，张 鹏，魏力强，苏金刚   

  1. （国网河北省电力有限公司电力科学研究院，河北 石家庄 050011）
  • 出版日期:2022-10-15 发布日期:2022-10-15
  • 通讯作者: 国网河北省电力有限公司科技项目（kj2020-041）
  • 作者简介:作者简介：贾伯岩（1978- ），男，河北保定人，国网河北电力有限公司电力科学研究院电力设备技术中心主任，高工，主要从事输电防灾技术研究，河北省石家庄市体育南大街238号，050011。

Research on the effect of blocking state on the fire-extinguishing efficiency of liquid nitrogen in utility tunnel

Jia Boyan, Zhang Peng, Wei Liqiang, Su Jingang   

  1. （Electric Power Research Institute of State Grid Hebei Electric Power Company, Hebei Shijiazhuang 050011, China）
  • Online:2022-10-15 Published:2022-10-15

摘要： 摘 要：为研究防火封堵对综合管廊液氮灭火效能的影响，开展了相应的试验研究，研究封堵形式、封堵距火源距离和封堵率对于液氮灭火的影响。研究表明：液氮的隔氧窒息占主导作用，封堵的存在加速了窒息进程，进而提升了综合管廊液氮灭火效能。下部封堵对注氮灭火的促进效果比上部注氮更强，灭火效率比起无封堵分别提升了50.7%和30.4%。防火封堵距火源越近，封堵率越大，对液氮隔氧窒息效果的促进作用越显著。与距离较近时相比，防火封堵距火源较远时，灭火效率最高降低了35.2%；封堵率为75%的灭火效率与25%的相比最高提升了44.4%。因此，选用合理的封堵措施，优化封堵方式，可最大程度促进液氮灭火效果。

关键词: 关键词：狭长空间, 综合管廊, 防火封堵, 液氮灭火, 灭火效能

Abstract: Abstract: In review of the collected data on fire and rescue in Guangdong Province between 2016 to 2021, this research studied statistical change trend, characteristics of regional distribution, various category distribution, and the distribution of alarm time. An analysis model was developed using spatial analysis method. Based on 3 factors, including the current urban construction land usage, data on fire and rescue frequencies and urban development?boundary, analysis on the optimizing of fire and rescue station planning layout was conducted, which provides valuable statistical evidence to support the development of the designated fire and rescue station. Practical implications and recommendations on future fire and rescue services are presented based on statistical analysis and conclusions.

Key words: Key words: fire and rescue, fire planning, fire and rescue station, statistical analysis