寒冷地区地下综合管廊冬季结冰问题研究  

Study on the freezing problem of underground pipe gallery in cold regions

作　　者：褚伟鹏[1] 刘海 张弢[1] 王宗刚[1] CHU Weipeng;LIU Hai;ZHANG Tao;WANG Zonggang(Beijing Institute of Water,Beijing 100048,China;Beijing Tanzhou Water Supply Co.,Ltd,Beijing 101500,China)

机构地区：[1]北京市水利规划设计研究院,北京100048 [2]北京檀州自来水有限责任公司,北京101500

出　　处：《北京水务》2022年第2期19-24,共6页Beijing Water

基　　金：北京市科技计划与北京市基础设施投资有限公司科研项目(Z201100008220009):“综合管廊精细化能源管理的关键技术及应用示范研究”。

摘　　要：寒冷地区冬季由于环境温度较低,地面冷空气可以通过风亭进入综合管廊,造成管廊内部壁面、水管等部位结冰。为分析寒冷地区管廊内部结冰规律,保证管廊在寒冷天气下的正常运行,以北京北部郊区某综合管廊为研究对象,实测了冬季管廊内部温度分布。同时,对其易结冰段,建立了三维数值计算模型,分析了地面环境温度、地面风速及管廊坡度对管廊内部空间温度分布的影响规律。研究结果表明:当地面环境温度为-5℃、地面风速为5 m/s时,廊内就会出现结冰区;地面环境温度降低、地面风速增加,均会导致结冰区增加;具有纵向向上坡度的管廊比水平管廊的结冰区域更小,4°的纵向向上坡度可使结冰区域减小25%。综合管廊结冰规律的研究对管廊的设计和运行维护具有参考意义。Due to the low ambient temperature in cold areas in winter,cold air on the ground can enter the comprehensive pipe gallery through the wind pavilion,causing freezing on the internal wall and water pipes of the pipe gallery.In order to analyze the freezing law inside the pipe gallery in cold area and ensure the normal operation of the pipe gallery in cold weather,the temperature distribution inside the pipe gallery in winter was measured with a comprehensive pipe gallery in the northern suburb of Beijing as the research object.At the same time,a three-dimensional numerical model was established for the freezing-prone section,and the effects of ground ambient temperature,ground wind speed and tunnel slope on the temperature distribution in the inner space of the tunnel were analyzed.The results show that when the ground temperature is-5℃and the ground ambient horizontal wind speed is 5 m/s,there will be ice zone in the corridor.In addition,the decrease of ground temperature and the increase of wind speed will lead to the increase of ice area,while a gradient of 4°can reduce the area of ice by 25%.The study on the icing law of the comprehensive pipe gallery is of reference significance to the design,operation and maintenance of the pipe gallery.

关 键 词：综合管廊 结冰 环境温度 地面风速 坡度 

分 类 号：TU990.3[建筑科学—市政工程]