| 摘要: |
| 在现代防雷工程设计、施工和验收中，防雷接地是其中的主要工作。为了解土壤体积含水量对接地电阻的影响，对重庆市南川区金佛山国家综合气象观测专项试验外场2021年的接地电阻值和不同深度（地下0.1m、0.2m、0.3m、0.4m、0.5m、1.0m）的土壤体积含水量数据进行特征分析，并对接地电阻、土壤体积含水量日均值进行正态性检验，利用Spearman相关系数进行相关性分析。结果表明，深度为0.1m～1.0m时，接地电阻与不同深度的土壤体积含水量之间均呈现负相关关系，与深度为0.5m的土壤体积含水量之间相关度最强，与接地极的埋深较为一致。通过本文所做的工作，对防雷接地设计有一定的参考价值。 |
| 关键词: 接地电阻；土壤体积含水量；Spearman相关系数 |
| DOI： |
| 投稿时间：2023-04-26修订日期：2023-08-18 |
| 基金项目:重庆市气象部门业务技术攻关项目“重庆防雷装置智能在线监测技术研究与示范应用”（YWJSGG-202148） |
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| Correlation analysis between grounding resistance and soil volume water content based on Spearman"s rank correlation coefficient |
| hejing |
| () |
| Abstract: |
| In the design, construction, and acceptance of modern lightning protection engineering, lightning protection grounding is the main task. In order to understand the influence of soil volumetric water content on grounding resistance, the characteristics of grounding resistance and soil volumetric water content data at different depths (Underground 0.1m, 0.2m, 0.3m, 0.4m, 0.5m, 1.0m) in the special test field of Jinfoshan national comprehensive meteorological observation in Nanchuan District, Chongqing in 2021 were analyzed. Conduct a normality test on the daily average of ground resistance and soil volumetric water content, and Spearman"s rank correlation coefficient is used for correlation analysis.The results show that when the depth is 0.1m～1.0m, there is a negative correlation between grounding resistance and soil volumetric water content at different depths, and the correlation with soil volumetric water content at the depth of 0.5m is the strongest, which is comparatively consistent with the burial depth of Earth electrode.The work done in this article has certain reference value for lightning protection and grounding design. |
| Key words: grounding resistance；soil volumetric water content；Spearman''s rank correlation coefficient |
