地下环状通道高度对顶棚附近最高温度影响研究

Study on Impacts of Underground Circular Channel Height on the Highest Temperature near the Ceiling

文章研究地下环状通道火灾时顶棚附近的最高温度,采用FDS数值模拟手段获得了隧道高度为3～7 m共9种工况下的最高温度数据,得到隧道高度与烟气温度的变化趋势;通过对Kurioka最高温度预测模型进行修正,使其能适应无送风情况下的隧道顶棚附近最高温度预测。

The highest temperature near the ceiling of the underground circular channel in fire scenario is studied in this paper.By using FDS numerical simulation method,the maximum temperature data for total 9 kinds of conditions with tunnel height of 3~7 m are obtained.The variation tendency of the maximum temperature of the smoke with the tunnel height is gained.By modifying the maximum temperature prediction model of Kurioka,it can adapt to prediction of the maximum temperature near the tunnel roof in the case of no air supply.