北方地区屏蔽门系统地铁初期冬季热环境分析

Analysis of Thermal Environment of Platform Screen Doors System in Early Stage of Subway Operation in North China during Winter

研究目的:以北方地区典型城市气象参数为基础,选取具有代表性的城市,采用一维模拟的方法,对地铁运行初期冬季热环境进行分析,从而为地铁运行初期找到适合当地的热环境控制方式和地铁运行模式。研究结论:(1)地铁运行初期,开式运行时西安(寒冷B区)基本不存在区间防冻问题,兰州(寒冷A区)、乌鲁木齐(严寒B区)、哈尔滨(严寒A区)冬季区间出现防冻问题分别占整个冬季地铁运行时间的19. 6%、69.8%和80.4%,建议西安冬季采用开式运行模式;(2)兰州可采用开式运行,但要注意室外温度连续过低时区间防冻问题;(3)乌鲁木齐和哈尔滨地区采用闭式运行的模式,采用闭式运行模式时可提高区间温度,满足规范要求,但车站温度仍偏低,需采取其他临时防寒措施;(4)本研究结果可为北方不同气候区下地铁运行初期热环境控制及运行模式提供依据。

Research purposes : Based on the meteorological parameters of typical cities in the north, the typical cities are selected. The winter thermal environment in the early stage of subway operation was analyzed using one-dimensional simulation method, to find the local thermal environment control mode and subway operation mode in the early stage of subway operation.Research conclusions:(1) In Xi’an(cold region B), there is almost no frost prevention problem in interval tunnel and the frost prevention problem ranges of Lanzhou( cold region A), Urumqi( severe cold region B) and Harbin( severe cold region A) account for 19.6%, 69. 8% and 80.4% of the winter operation time respectively in open mode operation during winter. This paper suggests that the open mode operation is reasonable in Xi’an.(2) Lanzhou can adopt open mode operation, but must pay attention to the consecutive too low outdoor temperature.(3) The closed operation mode in Urumqi and Harbin area should be adopted. When the closed operation mode is adopted, the interval tunnel temperature can be increased to meet the specification requirements. However, the station temperature is still low, and other temporary cold prevention measures should be taken.(4) The research results can provide a basis for thermal environment control and operation mode in the early stage of subway operation in different climatic regions in north China.