Abstract: The safe management of utility tunnel is crucial for re⁃ silient cities. Analyzing the causes of power cabin fires, fire char⁃ acteristics and the special measurements of fire safety, the key sci⁃ entific issues of cable fires in utility tunnels are summarized. From the three aspects of cable fires, such as combustion dynamic mechanism, risk assessment and fire detection and protection, the overall progress of the research on power cabin fires in utility tunnels are summarized. The results show that the current re⁃ search have been achieved in the basic theory and practical applica⁃ tion of power cabin fires. However, there is a lack of in-depth dis⁃ cussion on the impact of complex tunnel structural factors on fire development. The flame spread of cable fires in long ventilation compartments and effective fire prevention and automatic control are important issues for future research on utility tunnel fire pro⁃ tection systems.

Key words: utility tunnel, power cable, fire research, risk assess? ment, fire warning