地铁杂散电流对埋地管道的影响与防护  

Influence and protection of Buried Metal Pipelines on Stray Current

作　　者：魏洲邦 刘广桥[1] 曹刚 WEI Zhou-bang;LIU Guang-qiao;CAO Gang(Lanzhou City College,Lanzhou 730070,China)

机构地区：[1]兰州城市学院,甘肃兰州730070

出　　处：《全面腐蚀控制》2020年第3期41-45,共5页Total Corrosion Control

基　　金：国家自然科学基金(51865025);甘肃省自然科学基金(18JR3RA218);甘肃高等学校科研项目(2018A-104);兰州市科技计划项目(2018-4-32)。

摘　　要：通过实验室装置模拟了兰州地铁2号线直流杂散电流对埋地管道的影响,并在不同层数收集网、不同网格面积收集网、不同供电方式及不同供电电压条件下进行了直流杂散电流收集效果测试。结果表明,供电方式、供电电压对杂散电流影响较大,若在走行轨与埋地管道间敷设收集网,收集网材料为铜网、收集网为3层、收集网网格面积为16cm2时收集效果最佳,并对原因进行了分析及提出相应的防腐措施。This paper simulated the impact of DC stary current which created by the Metro Line 2 of Lanzhou on buried pipelines by using laboratory equipments.The DC stray current collection effect was tested by different layers of collection mats,different grid area,different power supply modes and different supply voltage conditions.The results show that the mode of power supply and the voltage of power supply have great influence in terms of stray current.If the collection mats was laid between the running track and buried pipeline,the best collection effect was obtained when use the copper mats,three layers and the area of 16 cm2 collection network.The reasons were analyzed and put forward the corresponding anti-corrosion measures.

关 键 词：杂散电流 实验研究 埋地管道 杂散电流收集网 腐蚀防护 

分 类 号：TG174[金属学及工艺—金属表面处理]