李自力
,
崔淦
,
尚兴彬
,
刘妍
腐蚀与防护
为了研究土壤电阻率和阳极埋设方式对长输管线阴极保护电位分布的影响,建立了长输管线阴极保护的简单物理模型,利用边界元算法的管单元法建立相应的数学模型,采用Matlab编程进行模拟求解.首先设计试验验证模拟结果的正确性,然后分别设定了不等的电阻率以及不同的阳极埋设方式进行模拟计算.结果表明,不同的土壤电阻率和不同的阳极埋设方式均会对长输管线阴极保护电位的分布产生很大影响.
关键词:
土壤电阻率
,
阳极埋设方式
,
阴极保护电位
,
边界元法
李循迹
,
赵密锋
,
周理志
,
常泽亮
,
陈博
腐蚀与防护
doi:10.11973/fsyfh-201610015
用不等距法测某场站深井阳极地床处土壤电阻率沿垂直方向的分布,探讨了比较经济的阳极井深度,提出了在深井阳极地床安装过程中需要严格控制的关键环节.结果表明:土壤电阻率随地层深度的增大呈先减小后增大的趋势,比较经济的井深为40 m;严格控制深井阳极地床施工中的关键环节,深井阳极地床的施工质量和阴极保 护效果才能得到可靠保证.
关键词:
深井阳极地床
,
不等距法
,
土壤电阻率
,
接地电阻
,
通电电位
Liangshan QU
金属学报(英文版)
Soil resistivity is one of the key indicators of the corrosive classification assessment on metal materials in soil environment. This paper presents variance characters of various quantity of soil resistivity samples data based on the semi-variance function methods of Geo-statistical Analysis by analyzing the regional soil resistivity sampling data in Daqing area. Furthermore, the variance of the soil resistivity as well as entire soil circumstance due to different sampling amounts are also analyzed and compared by means of using the characteristic parameters of the semi-variance function. In addition, this work also studied the rational sampling quantities according to various measurement errors required and evaluated the local soil corrosivity on carbon steel based on the actual measuring data in this area.
关键词:
Soil resistivity
,
spatial variability
,
sampling
