防雷接地装置腐蚀影响因素的层次分析法

防雷接地装置是保证防雷系统正常运行的基础，然而，它不可避免会受到土壤的腐蚀。首先对防雷接地装置腐蚀机理进行了论述；其次通过整理、分析文献资料，合理选取影响防雷接地装置腐蚀的主要因素；然后根据腐蚀因素参与腐蚀的程度，构建层次分析模型，利用模型对腐蚀因素进行定量分析，界定出影响因素对防雷接地装置腐蚀影响的权重值；最后对腐蚀因素进行综合排序。研究表明，影响防雷接地装置腐蚀的最主要因素为pH值、土壤电阻率和含水量，这为制定经济合理、安全可靠的防雷接地装置腐蚀防护措施提供了科学依据，具有实际工程应用价值。

Analytic hierarchy process on influence factors for corrosion of lightning protection grounding device

Lightning protection grounding device was the basis to ensure the normal operation of lightning protection system. However, it would be inevitably corroded by soil. Firstly, the corroded mechanism of lightning protection grounding device was expounded. Secondly, based on the sorting and analysis of document literatures, the main corrosive factors which affected the lightning protection grounding device were properly selected. Thirdly, according to the corrosive degree which was affected by corrosive factors, the hierarchical model was constructed. Then, the model was used to make the quantitative analysis for corrosive factors, and the weighted values of corrosive factors affecting lightning protection grounding system were determined. Finally, the corrosive factors were comprehensively ordered. The research showed that the major corrosive factors affecting lightning protection grounding devices were PH value, soil resistivity and moisture content. It offers the scientific basis to the economic and reasonable, safe and reliable corrosive safeguard procedures of lightning protection grounding device, and has the practical engineer- ing application value.