Cable fire in utility tunnel commonly cause severe economic lost. This work experimentally investigates influence of cable inclination angle and longitudinal ventilation on temperature distribution during cable fire in utility tunnel. The position of the maximum ceiling temperature is located near the fire source. The position of the maximum ceiling temperature shifts with the increase of the wind speed. When the wind speed is less than 0.45 m/s, the maximum ceiling temperature increases with the increase of wind speed. When the wind speed is greater than 0.45 m/s, the conclusion is opposite. The dimensionless temperature rise and the longitudinal distance accord well with the attenuation law of power-exponential function. In the area between the cable bearer and the fan, larger wind speed corresponds to faster decay of the dimensionless temperature rise. In the area between the cable bearer and the outlet, the conclusion is opposite. The position of the maximum ceiling temperature is independent of the cable inclination angle. When the cable inclination angle is less than 15°, the maximum ceiling temperature increases with the increase of the cable inclination angle. When the cable inclination angle is greater than 15°, the conclusion is opposite.

综合管廊电缆火灾通常会造成严重的经济损失。这项工作通过实验研究了电缆倾斜角度和纵向通风对综合管廊电缆火灾期间温度分布的影响。最高天花板温度的位置位于火源附近。最高顶温的位置随着风速的增加而变化。当风速小于 0.45 m/s 时，最高顶棚温度随着风速的增加而增加。当风速大于 0.45 m/s 时，结论相反。无量纲温升和纵向距离符合幂指数函数衰减规律。在电缆承载器和风扇之间的区域，更大的风速对应于更快的无量纲温升衰减。在电缆承载和出口之间的区域，结论相反。最高天花板温度的位置与电缆倾斜角度无关。当电缆倾斜角小于15°时，最高天花板温度随着电缆倾斜角的增加而增加。当电缆倾斜角大于15°时，结论相反。