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In order to study the correlation between the concentration of gas produced by fire and the spread of fire in the cable compartment, this paper conducted a full-size numerical simulation of the cable compartment using the FDS software to analyze the temperature distribution and Hcl gas diffusion in the cable compartment under different fire source powers. Three sets of temperature sensors and Hcl sensors were set up to facilitate the observation of temperature changes and Hcl concentration changes under fire scenarios in the compartment. The results show that the temperature and Hcl concentration at the 1.7 m measurement point were higher than that at the 1.2 m measurement point. The temperature can reach up to 936 ℃ under 8 MW power, and the Hcl concentration reaches the peak value of 0.09 mol/mol in 25 s under 8 MW power. The results of the study will be useful for the fire hazard assessment and safety design of the integrated pipe corridor.

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FDS-Based Simulation Temperature Distribution and Hcl Diffusion Induced by Tunnel Cable Fire

  • 会议论文

  • 发表日期：

    2025年

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  • Yi Chen,
  • Ke Wang,
  • Yinglong Liu,
  • Jian Guo,
  • Chuansheng Luo,
  • Xing Gong

摘要

In order to study the correlation between the concentration of gas produced by fire and the spread of fire in the cable compartment, this paper conducted a full-size numerical simulation of the cable compartment using the FDS software to analyze the temperature distribution and Hcl gas diffusion in the cable compartment under different fire source powers. Three sets of temperature sensors and Hcl sensors were set up to facilitate the observation of temperature changes and Hcl concentration changes under fire scenarios in the compartment. The results show that the temperature and Hcl concentration at the 1.7 m measurement point were higher than that at the 1.2 m measurement point. The temperature can reach up to 936 ℃ under 8 MW power, and the Hcl concentration reaches the peak value of 0.09 mol/mol in 25 s under 8 MW power. The results of the study will be useful for the fire hazard assessment and safety design of the integrated pipe corridor.