The Effect of Soil Resistivity on Cathodic Protection Potential Distribution Outside of Tank Bottom

Journal of Petrochemical Universities ›› 2007, Vol. 20 ›› Issue (1): 81-84.

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The Effect of Soil Resistivity on Cathodic Protection Potential Distribution Outside of Tank Bottom

DU Yan-xia, ZHANG Guo-zhong

College of Architecure & Storage Engineering,China University of Petroleum, Dongying Shandong 257061, P.R.China

Received:2006-07-02 Published:2007-03-20 Online:2017-06-28

土壤电阻率对罐底外侧阴极保护电位分布的影响

杜艳霞, 张国忠

中国石油大学储运与建筑工程学院,山东东营257061

作者简介:杜艳霞(1980-),女,山东东营市,在读博士。

Abstract

Abstract:

A mathematical model was established for the cathodic protection potential distribution outside of tank bottom, in which the inhomogeneity of medium was taken into account. The effect of soil resistivity change along vertical direction on potential distribution was studied through numerical simulation. The simulated results indicate that the non-uniformity is further intensified due to the bitumen sand base; soil resistivity in the position where auxiliary anodes are placed has significant effect on potential distribution; there is a buried depth of anode for optimal potential distribution under different geological conditions.

Key words: Tank bottom , Cathodic protection , Mathematical model , Soil resistivity , Potential distribution

摘要： 建立了罐底外侧阴极保护电位分布的数学模型,模型中考虑了介质的不均匀性。利用数值模拟方法研究了罐底土壤电阻率沿垂直方向变化对电位分布的影响。结果表明:罐底沥青砂基础会加大电位分布的不均匀性;阳极埋深处的土壤电阻率对整个罐底的电位均有显著影响;在不同地质条件下进行深井阳极保护时,存在一个使电位分布效果最佳的阳极埋深点。

关键词: 罐底 , 阴极保护 , 数学模型 , 土壤电阻率 , 电位分布

DU Yan-xia, ZHANG Guo-zhong.

The Effect of Soil Resistivity on Cathodic Protection Potential Distribution Outside of Tank Bottom

[J]. Journal of Petrochemical Universities, 2007, 20(1): 81-84.

杜艳霞, 张国忠. 土壤电阻率对罐底外侧阴极保护电位分布的影响[J]. 石油化工高等学校学报, 2007, 20(1): 81-84.

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The Effect of Soil Resistivity on Cathodic Protection Potential Distribution Outside of Tank Bottom

土壤电阻率对罐底外侧阴极保护电位分布的影响

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