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| Resistivity characteristics and correlation analysis among parameters of unsaturated purple soil |
| Received:July 25, 2019 |
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| KeyWord:purple soil;resistivity;correlation analysis |
| Author Name | Affiliation | E-mail | | WANG Zheng-cheng | College of Civil Engineering, Chongqing Three Gorges University, Chongqing Engineering Research Center of Disaster Prevention&Control for Banks and Structures in Three Gorges Reservoir Area Chongqing, Chongqing 404100, China | | | MAO Hai-tao | College of Civil Engineering, Chongqing Three Gorges University, Chongqing Engineering Research Center of Disaster Prevention&Control for Banks and Structures in Three Gorges Reservoir Area Chongqing, Chongqing 404100, China
Institute of Water Conservancy and Hydroelectric Power, Wuhan University, Wuhan 430072, China | maohaitao1234@163.com | | CHENG Long-fei | College of Civil Engineering, Chongqing Three Gorges University, Chongqing Engineering Research Center of Disaster Prevention&Control for Banks and Structures in Three Gorges Reservoir Area Chongqing, Chongqing 404100, China | chenglongfei@126.com | | SHEN Ji-wei | College of Civil Engineering, Chongqing Three Gorges University, Chongqing Engineering Research Center of Disaster Prevention&Control for Banks and Structures in Three Gorges Reservoir Area Chongqing, Chongqing 404100, China | | | ZOU Jian-hua | College of Civil Engineering, Chongqing Three Gorges University, Chongqing Engineering Research Center of Disaster Prevention&Control for Banks and Structures in Three Gorges Reservoir Area Chongqing, Chongqing 404100, China | | | TANG Xin | College of Civil Engineering, Chongqing Three Gorges University, Chongqing Engineering Research Center of Disaster Prevention&Control for Banks and Structures in Three Gorges Reservoir Area Chongqing, Chongqing 404100, China | |
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| Abstract: |
| Resistivity is a basic parameter that can reflect the electrical conductivity of soil, such as the microstructure of the soil, water content, and heavy metal pollution. There are many factors affecting the determination of soil resistivity, such as current frequency, dry density, water content, and metal ion content. In order to determine the law of influence and sensibility of various factors on resistivity, a resistivity test was conducted based on the unsaturated purple soil widely distributed in the Three Gorges Reservoir area using the two-electrode method. In addition, the correlation between the resistivity and influencing parameters was further analyzed by SPSS. The results showed that the resistivity of purple soil decreased with the increase in the current frequency, dry density, and water and zinc content, and the speed gradually slowed, and finally tended to stable. The resistivity of purple soil and its influencing factors were in accordance with normal distribution, while the significance value was greater than 0.05. The negative correlations between the resistivity and current frequency and zinc content were significant or extremely significant. In addition, the correlations between the resistivity and dry density and water content were extremely significant. The present study reflected the influence of various factors on the resistivity in order to improve the accuracy of resistivity measurements. |
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