摘要
土壤电阻率是接地网设计中重要的考虑因素,也是雷击风险评估现场勘察采集的重要数据.本文主要从土壤电阻率的测量方法、影响因素、应用三个方面进行理论探讨.通过分析土壤电阻率的影响因子,得出分片区进行多处测试的结论;结合土壤电阻率在防雷技术方面的应用,提出测量点位置选择的建议;本文还介绍了温纳四极法测量土壤电阻率的原理以及测量的注意事项,最后提出确定测试间距的依据.
Soil resistivity is of great importance to the design of earthing network. In a site survey oflightning risk assessment, the data of soil resistivity should be collected. The discussion about themeasurement method, influence factors, and applications of soil resistivity is given in this paper. Byanalyzing the influence factors, it is found that the tested site can be divided into several parts according tosoil structure, and the soil resistivity can be measured enough at several different points. In addition,suggestions are put forward for the choice of measuring point based on the applications of soil resistivity inthe lightning protection technology. The principle of the Wenner four-electrode method and the relatedmeasurement skills are introduced as well. Finally, we present how the electrode interval is determined.
关键词
土壤电阻率
雷击风险评估
测量
soil resistivity
lightning risk assessment
measurement
