地铁运营初期区间隧道气温变化规律研究

对苏州地铁2号线3个连续区间的隧道气温进行测试,分析隧道气温在夏季最热月和冬季最冷月的特征及动态变化规律。结果表明夏季隧道气温比冬季隧道气温高,夏季和冬季隧道气温分别在23.5~27.5℃和16.5~20℃之间变化;当室外气温达到30℃以上时,隧道风机对隧道气温有提升作用,车辆运营和停运时分别可提升约1.5℃和2℃。车辆运行时,冬季和夏季隧道气温均以行车间隔为周期呈锯齿形变化,冬季可能出现倒锯齿形变化;车辆运行与停运时隧道气温比较,夏季车辆运行时高,冬季车辆运行时低;夏季区间隧道中部气温与隧道长度呈正相关关系,冬季时隧道中部气温与隧道长度无规律性关系。

Research on Air Temperature of Metro Tunnel during the Initial Stage

This paper aims to explore the air temperature characteristics and the change rules of several tunnels for the hottest month of summer and the coldest month of winter.The air temperature of three tunnels of the Suzhou Metro Line 2 was tested.The results show that the air temperature of the tunnel was higher in summer than it was in winter.The summer and winter air temperatures ranged from 23.5℃ to 27.5℃,and 16.5℃ to 20℃,respectively.When the outdoor temperature was above 30℃,the tunnel fan was able to improve the air temperature of the tunnel by 1.5℃ and 2℃ during,respectively,vehicle operation and vehicle outage.In both winter and summer,when the vehicle was running,the tunnel air temperature changed periodically,and the change period was the same as the departure interval.When the vehicle was running,the temperature was higher in summer and lower in winter,relative to the temperatures attained during vehicle outage.In summer,the air temperature at the middle interval of the tunnel was positively related to the length of the tunnel.In winter,the temperature at the interval showed no clear relationship with the length of the tunnel.