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 ›› 2023, Vol. 42 ›› Issue (12): 1642-1645.

• • 上一篇    下一篇

窄通道过载线缆火灾早期燃烧特征及防治措施研究

龚向阳1, 董平2, 何玉涛2, 陈诚1   

  1. （1. 国网浙江省电力有限公司宁波市奉化区供电公司，浙江 宁波 315599；2. 国网浙江省电力有限公司宁波供电公司，浙江 宁波 315500）
  • 出版日期:2023-12-15 发布日期:2023-12-15
  • 作者简介:龚向阳（1980- ），浙江义乌人，国网浙江省电力有限公司宁波市奉化区供电公司总经理，高级工程师，主要从事电网规划、电网可靠性、电力设施风险控制等方面的研究，浙江省宁波市奉化区锦屏街道广济路7号，315599。
  • 基金资助:
    浙江省安全工程与技术研究重点试验室开放基金项目（202103）；浙江省自然科学基金项目（LQ20E060007）

Study on early combustion characteristics and prevention measures of overloaded cable fire in narrow channel

Gong Xiangyang1, Dong Ping2, He Yutao2, Chen Cheng1   

  1. (1. Ningbo Fenghua District Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhejiang Ningbo 315599, China;2. Ningbo Power Supply Company, State Grid Zhejiang Electric Power Co., Ltd., Zhejiang Ningbo 315500, China)
  • Online:2023-12-15 Published:2023-12-15

摘要： 针对电缆沟、电缆夹层等窄通道内电缆火灾安全问题，本文开展过载线缆燃烧试验，定量表征了环境温升、典型气体质量浓度、火蔓延速率及熄火距离等特征参数。结果表明：燃烧初期CO2的生成量要远远大于CO生成量，并且在一定范围的电流强度内，线缆火蔓延速率、熄火距离均与电流强度近似成线性正相关。在此基础上，从电气线路监控、早期火灾探测方法、防火阻隔等方面提出线缆火灾的防治措施，为窄通道内的电缆消防安全提供指导。

关键词: 消防安全, 窄通道, 线缆火灾, 火蔓延, 熄火距离

Abstract: Aiming at cable fire safety in narrow channels, such as cable trench and cable interlayer, combustion experiments of overloaded cables were carried out in this work. The characteristic parameters such as ambient temperature rise, typical gas mass concentration, fire spreading rate and flameout distance were quantitatively characterized. The results showed that the amount of generated CO2 at the initial burning stage is much greater than the amount of generated CO. In a certain range of current intensity, the cable fire spread rate and flameout distance are approximately linearly positive correlated with the current intensity. Moreover, propose prevention and control measures for cable fire were put forward from the aspects such as electrical circuit monitoring and early fire detection methods and fire barriers, which can provide guidance for cable fire safety in narrow channels.

Key words: fire safety, narrow passage, cable fire, fire spreading, flameout distance