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Combustion characteristics and flame morphological evolution of double-layer cable fires in urban utility tunnels with various laying spacings

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  • Xu, Desheng
  • Li, Yanfeng
  • Li, Junmei
  • Zhong, Hua
  • Li, Jiaxin
  • Huang, Youbo

Abstract

Utility tunnels serve as critical infrastructure for urban energy and electricity transport systems, housing multi-layered cable arrangements that pose significant fire hazards. This study investigates the effects of cable arrangement and layer spacing on the combustion parameters and flame evolution of double-layer cable fires, emphasising their implications for energy infrastructure safety. Using a reduced-scale utility tunnel model, we conducted fire experiments to measure the heat release rate (HRR), oxygen consumption, and fuel energy of cable combustion.

Suggested Citation

  • Xu, Desheng & Li, Yanfeng & Li, Junmei & Zhong, Hua & Li, Jiaxin & Huang, Youbo, 2025. "Combustion characteristics and flame morphological evolution of double-layer cable fires in urban utility tunnels with various laying spacings," Energy, Elsevier, vol. 315(C).
    • Handle: RePEc:eee:energy:v:315:y:2025:i:c:s0360544224041021
    DOI: 10.1016/j.energy.2024.134324
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    References listed on IDEAS

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    1. Chen, Yuhang & Miao, Yanli & Tao, Shangqing & Li, Quan & Yuan, Yilin & Zhang, Xiaolei & Hu, Longhua, 2024. "Flame structure and dynamics in pool fires of different geometries: Experimental and numerical investigation," Energy, Elsevier, vol. 304(C).
    2. Yan, Wenhao & An, Hongsheng & Li, Chenguang & Gao, Zihe, 2024. "Experimental investigation on the ceiling flame impingement and temperature distribution in tunnel with varying widths and fire source locations," Energy, Elsevier, vol. 312(C).
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    5. Deng, Lei & Shi, Congling & Mcnamee, Margaret & Tang, Fei, 2024. "Experimental study on the burning rate and flame dynamics of oil reservoir pool fire under cross-wind: Effect of lip height," Energy, Elsevier, vol. 310(C).
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    Cited by:

    1. Huang, Xinjie & Ding, Hailong & Yin, Zhipeng & Zhao, Yuexin & Wang, Miaomiao & Wang, Changlong, 2025. "Effects of side-confined distance and wire spacing on the flame spread and merging characteristics over two energy wires," Energy, Elsevier, vol. 322(C).
    2. Cheng, Jin & Zhong, Ke & Wang, Liang & Kang, Yanming, 2025. "Numerical study on thermal environment in a long-distance underground power tunnel with tangential heat transfer and delay-effect," Energy, Elsevier, vol. 323(C).

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