郑州地铁地下车站给排水管道冬季防冻保温方案

Winter Anti-freeze and Insulation Scheme for Zhengzhou Metro Underground Station Water Supply and Drainage Pipelines

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摘要 [目的]在我国北方的冬季,在城市轨道交通地下车站风道、出入口等与室外连通处设置的给排水管道经常出现冻结、爆管现象,需要科学、合理地确定地铁车站管道冬季防冻保温方案,并确定电伴热系统的设置范围。[方法]以郑州地铁城郊线某地下车站为例,选取该站出入口及活塞风道中的7个典型测点,对7个测点的环境温度进行监测分析。基于训练熟练的神经网络模型,选取了2个最不利工况,对这2个最不利工况下各测点的环境温度实际值和仿真值进行对比。采用COMSOLMultiphysics软件,模拟了特定区域内多种管径类型给排水管道内水温的变化规律。[结果及结论]提出了郑州地铁地下车站给排水管道冬季防冻保温及电伴热系统的设置方案。与既有方案相比,所提方案减小了电伴热系统的设置范围,减少了建设投资,降低了运营期的运维成本。 [Objective]During winter in northern China,water supply and drainage pipelines located at ventilation ducts and the entry/exit that connect urban rail transit underground stations to the outdoors are prone to freezing and bursting.It is necessary to develop a scientific and reasonable winter anti-freeze and thermal insulation scheme for metro station pipe-lines,determining the appropriate coverage of electric heat tracing system.[Method]Using an underground station on the suburban line of Zhengzhou Metro as example,seven typi-cal monitoring points at the station entry/exit and piston venti-lation ducts are selected.The ambient temperature at the seven points are monitored and analyzed.Based on a well-trained neural network model,two most unfavorable working condi-tions are selected,under which comparisons are made between the actual and simulated ambient temperatures at each monito-ring point.COMSOL Multiphysics software is used to simulate the water temperature variation patterns within water supply and drainage pipelines of various diameters in specific areas.[Re-sult&Conclusion]A configuration scheme of winter anti-freeze,insulation,and electric heat tracing system for water supply and drainage pipelines in Zhengzhou Metro underground stations is proposed.Compared to existing solutions,the pro-posed scheme reduces the configuration scope of electric heat tracing system,lowers the construction investment,and de-creases the operation and maintenance costs during the opera-tion phase.

作者王辉江琴杨广伟刘军侯广明毛天广高怡 WANG Hui;JIANG Qin;YANG Guangwei;LIUJun;HOU Guangming;MAO Tianguang;GAOYi(Zhengzhou Metro Group Co.,Ltd.,450047,Zhengzhou,China;Beijing Urban Construction Design&Deve-lopment Group Co.,Ltd.,100037,Beijing,China)

机构地区郑州地铁集团有限公司北京城建设计发展集团股份有限公司

出处《城市轨道交通研究》北大核心 2025年第8期237-242,共6页 Urban Mass Transit

基金北京市自然科学基金资助项目(8172006)。

关键词地铁地下车站给排水管道电伴热系统防冻保温措施 metro underground station water supply and drainage pipeline electrical heat tracing system anti-freeze and insulation measures

分类号 U231 [交通运输工程—道路与铁道工程]

作者简介第一作者:王辉,高级工程师,283148829@qq.com;通信作者:杨广伟,高级工程师,479805966@qq.com。