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[1]常景龙.受潮汐干扰管道分布调查及干扰影响规律[J].油气储运,2025,44(01):1-12.
　Chang Jinglong.Investigation on pipeline distribution affected by tidal interference and analysis of interference patterns[J].Oil & Gas Storage and Transportation,2025,44(01):1-12.
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受潮汐干扰管道分布调查及干扰影响规律

《油气储运》[ISSN:1000-8241/CN:13-1093/TE] 卷: 44 期数: 2025年01期 页码: 1-12 栏目: 出版日期: 2025-01-25
Title:
Investigation on pipeline distribution affected by tidal interference and analysis of interference patterns
作者:
常景龙
国家石油天然气管网集团有限公司
Author(s):
Chang Jinglong
China Oil & Gas Pipeline Network Corporation
关键词:
埋地管道; 杂散电流干扰; 潮汐干扰; 管地电位; 数值模拟
Keywords:
buried pipelines;  stray current interference;  tidal interference;  pipe-to-soil potential;  numerical simulation
分类号:
TE988
文献标志码:
A
摘要:
【目的】为明确中国受潮汐干扰管道分布及管道受潮汐干扰规律。【方法】采用埋地试片法进行了24 h电位监测，通过试片的波形变化对潮汐干扰规律进行了分析，并利用傅里叶变换对电位监检测数据进行了频域分析。通过数值模拟计算研究了不同干扰电压、管道距干扰源的间距、土壤电阻率等因素对管道受潮汐干扰的影响规律。【结果】中国受潮汐干扰管道主要集中在东部沿海区域，分布于江苏、福建、浙江、辽宁、山东等省份，干扰源主要为海洋及大型水体，潮汐干扰区域管道普遍叠加有地铁杂散电流干扰。干扰源对管道产生潮汐干扰影响时的最大间距为55 km，干扰源距管道超过25 km时，管道管地电位波动幅度显著减小。【结论】管道受到潮汐干扰时，管地电位变化曲线与附近大型水体潮汐涨落曲线趋势基本一致，呈“双峰双谷”波动特征，波动周期约为12 h，频率为2.3×10-5 Hz。与海岸线平行的管道受到潮汐干扰时，管道距离干扰源最近处为杂散电流流入时，远离管道两侧末端杂散电流流出；反之，当管道距离干扰源最近处为杂散电流流出时，远离管道两侧末端杂散电流流入。随着管道远离海岸线，管道受潮汐杂散电流强度呈指数下降。研究结果可为潮汐干扰下管道腐蚀风险评估与干扰防护提供理论依据与参考。
Abstract:
[Objective] This study aims to clarify the pipeline distribution affected by tidal interference and the corresponding interference patterns in China. [Methods] A 24-hour potential monitoring was conducted using the buried test piece method. Tidal interference patterns were analyzed through the waveform changes of the test piece, and frequency domain analysis of the potential monitoring data was performed using Fourier transform. The effects of various interference voltages, pipeline proximity to interference sources, soil resistivity, and other factors on tidal interference patterns were investigated through numerical simulation calculation. [Results] In China, pipelines affected by tidal interference are primarily concentrated in the eastern coastal region, specifically in Jiangsu, Fujian, Zhejiang, Liaoning, and Shandong. The main interference sources are oceans and large water bodies, with subway stray current interference typically superimposed on pipelines in areas experiencing tidal interference. This study found that the maximum distance at which an interference source can affect a pipeline through tidal interference was 55 km. Beyond 25 km, the fluctuation amplitude of the pipe-to-soil potential decreased significantly. [Conclusion] When the pipeline is affected by tides, the variation curve of pipe-to-soil potential closely follows the tiding trends of nearby large water bodies, exhibiting a “double peaks and double valleys” fluctuation pattern with a period of approximately 12 hours and a frequency of 2.3×10-5 Hz. For a pipeline parallel to the coastline and affected by tides, the point nearest to the interference source experiences incoming stray current, while both ends farthest from such source experience outgoing stray current, and vice versa. As the pipeline moves away from the coastline, the intensity of tidal stray current on the pipeline decreases exponentially. The research results provide a theoretical basis and reference for assessing pipeline corrosion risk under tidal interference and for developing interference prevention strategies.

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备注/Memo

作者简介：常景龙，男，1971年生，高级工程师，1995年博士毕业于内蒙古大学化学系化学专业，现从事管道防腐技术专业方向的研究工作。地址：北京市朝阳区东土城路5号城科大厦518室，100013。电话：010-87981893。Email：changjl@pipechina.com.cn

更新日期/Last Update: 2024-11-01