Acta Metallurgica Sinica (English Letters) ›› 2010, Vol. 23 ›› Issue (5): 396-400.DOI: 10.11890/1006-7191-105-396

• 研究论文 • 上一篇    

Research on the spatial variability of soil resistivity parameters and rational sampling number about the metal corrosion in Daqing area

杜翠薇,周建龙   

  1. 北京科技大学
  • 收稿日期:2009-11-09 修回日期:2010-03-23 出版日期:2010-10-25 发布日期:2010-10-14
  • 通讯作者: 杜翠薇

Spatial variability of soil resistivity and rational sampling for corrosion assessment of carbon steel in Daqing area

Liangshan QU1,2, Cuiwei DU1, Xiaogang LI1, Jianlong ZHOU1   

  1. 1. Corrosion and Protection Center, Institute of Advanced Materials, Ministry of Education Key Laboratory for Corrosion and Protection, University of Science and Technology Beijing, Beijing 100083, China
    2. Oilfield Construction Design & Research Institute, Daqing Oil Limited Company, Daqing 163712, China
  • Received:2009-11-09 Revised:2010-03-23 Online:2010-10-25 Published:2010-10-14
  • Contact: Cuiwei DU

PDF (PC)

1283

关键词: soil resistivity, spatial variability, sampling

Abstract: 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.

Key words: Soil resistivity, Spatial variability, Sampling, Corrosion of carbon steel