摘要
北京市轨道交通发展迅猛,泄漏到大地的杂散电流日益增多,这些杂散电流会对埋地燃气管道造成干扰。本文对北京市埋地燃气管道所受地铁杂散电流干扰情况进行了现场检测,分析了干扰的程度和范围;研究了管道与地铁相对位置对杂散电流干扰的影响规律,同时探讨了北京地区地铁杂散电流干扰下管地电位的波动特性。结果表明:随着管道与地铁间距的减小,干扰越来越严重,并且在相同间距下交叉点的干扰程度大于并行段。地铁检修站附近的管道受杂散电流干扰更大。北京地区地铁杂散电流干扰下管地电位的波动周期主要分布在50~200s间。
With the rapid development of Beijing subways, the hazard of stray current leakage is increasingly severe to interfere with buried gas pipelines nearby. In this paper, a comprehensive inspection was conducted on the interference with the buried gas pipelines from the subway stray current in the Beijing area. The degree and the range of stray current interference were determined. Furthermore, the influence of the relative position of subways and pipelines on the stray current interference was studied. At the same time, the fluctuation characteristics of the ground potential under the disturbance of the subway stray current were discussed. The results show that the interference becomes more and more serious with the decrease of the distance between the pipeline and the subway rail, and for a given distance between a subway rail to a pipeline, the interference degree of the two lines is higher when they cross each other rather than that parallel to each other. Compared with other interference sources, the subway maintenance stations exhibit significantly stronger stray current interference. The fluctuation periods of the ground potential under the disturbance of subway stray current in the Beijing area are mainly distributed between 50 s and 200 s.
作者
刘瑶
谭松玲
邢琳琳
陈涛涛
陈程
尹志彪
杜艳霞
LIU Yao;TAN Songling;XING Linlin;CHEN Taotao;CHEN Cheng;YIN Zhibiao;DU Yanxia(Biejing Gas Group Co., Ltd., Beijing 100011, China;Safetech Research Institute Co., Ltd., Beijing 100083, China;School of Materials Science and Engineering, University of Science and Technology Beijing,Beijing 100083, China)
出处
《腐蚀科学与防护技术》
CAS
CSCD
北大核心
2019年第4期429-435,共7页
Corrosion Science and Protection Technology
关键词
地铁杂散电流
燃气管道
干扰规律
波动特性
subway stray current
gas pipeline
interference law
fluctuation characteristic
作者简介
刘瑶,女,1974年生,高级工程师;通讯作者:杜艳霞,研究方向为交直流干扰,E-mail:duyanxia@ustb.edu.cn.
