| 土壤电阻率测量影响因素的试验研究 |
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| 引用本文： | 周蜜,王建国,黄松波,豆朋,张丽镪,姚伟.土壤电阻率测量影响因素的试验研究[J].岩土力学,2011,32(11):3269-3275. |
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| 作者姓名： | 周蜜 王建国 黄松波 豆朋 张丽镪 姚伟 |
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| 作者单位： | 1. 武汉大学 电气工程学院，武汉 430072；2. 广东电网公司佛山供电局，广东 佛山 528000 |
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| 摘 要： | 实验室测量的土壤电阻率准确性受到电极布置以及测试信号类型等影响。选取5种不同质地土壤，比较了四极法与二极法测量以及四极法测量中电压极探针渗入深度的影响，分析了直流信号与交流信号的测试差别以及电流强度及交流频率的影响。结果表明，二极法测量结果包含了土壤与电极的接触电阻，且随土壤含水率降低接触电阻不断增大；四极法可在电压极渗入深度较浅，即土壤扰动较小的情况下测量；土壤在直流电压下存在极化效应，土壤电阻率测量宜采用交流；土壤热容量有限，对电阻率在200 Ω•m以内的土壤测量的电流密度不宜超过1 mA/cm2；土壤电阻率随测量频率增加而逐渐下降。
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| 关 键 词： | 土壤电阻率 二极法 四极法 接触电阻 极化效应 |
| 收稿时间： | 2010-09-29 |
Experimental investigation on influencing factors in soil resistivity measurement |
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| ZHOU Mi,WANG Jian-guo,HUANG Song-bo,DOU Peng,ZHANG Li-qiang,YAO Wei.Experimental investigation on influencing factors in soil resistivity measurement[J].Rock and Soil Mechanics,2011,32(11):3269-3275. |
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| Authors: | ZHOU Mi WANG Jian-guo HUANG Song-bo DOU Peng ZHANG Li-qiang YAO Wei |
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| Institution: | 1. School of Electrical Engineering, Wuhan University, Wuhan 430072, China; 2. Foshan Electric Power Supply Bureau, Guangdong Electric Power Grid Co., Foshan, Guangdong 528000, China |
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| Abstract: | Accuracy of soil resistivity measuring result in the laboratory will be influenced by electrodes arrangement,types of test signal,etc.Five types of soils with different textures are selected to investigate the influencing factors of soil resistivity measurement.A comparison of resistivity measuring results between four-electrode method and two-electrode method is made firstly;and the influence of potential electrode penetrations in four-electrode method is also studied.A comparison between the resistivity m... |
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| Keywords: | soil resistivity two-electrode method four-electrode method contact resistance polarization effect |
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