坡度对隧道拱顶烟气最高温度影响的数值模拟与实验研究

Numerical Simulation and Experimental Studies on the Effect of Slope on the Maximum Smoke Temperature Under the Ceiling in Tunnel Fires

摘要: 为研究坡度及隧道通风状况对城市隧道拱顶最高温度的影响,本文通过数值模拟和实验研究等手段,对0~3 m/s纵向通风风速下,坡度为0~±5%的城市地下隧道内拱顶最高温度的分布进行了研究;通过数值模拟和实验研究验证了无坡度时、Kurioka隧道顶棚最高温度理论模型,同时提出了坡度存在时该模型的修正模型.

Abstract: In order to study the effect of the slope and longitudinal velocity on the maximum temperature under the ceiling,numerical and experimental studies on the maximum smoke temperature under the ceiling in urban underground traffic tunnels with the gradient of 0 ~ ± 5% were studied in this paper.The results show that the maximum temperature under the tunnel ceiling predicted by Kurioka model agree well with the numerical and experimental results when the tunnel gradient is 0. At the same time,the revised Kurioka model is also suggested for the sloping tunnels by the authors.