A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil
Describing the hydraulic conductivity of unsaturated soil is very important in predicting water transport. Most current models have complex forms and generally need to be calibrated by the measured unsaturated hydraulic conductivity curve. A simple model, by which it is possible to conveniently pred...
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| Format: | Article |
| Language: | English |
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MDPI AG
2024-02-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/14/3/1254 |
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| author | Ziran Zhang Maosheng Zhang |
| author_facet | Ziran Zhang Maosheng Zhang |
| author_sort | Ziran Zhang |
| collection | DOAJ |
| description | Describing the hydraulic conductivity of unsaturated soil is very important in predicting water transport. Most current models have complex forms and generally need to be calibrated by the measured unsaturated hydraulic conductivity curve. A simple model, by which it is possible to conveniently predict the unsaturated hydraulic conductivity, is proposed in this study. The soil–water characteristic curve and hydraulic conductivity curve are separated into three parts. The soil–water characteristic curve is represented by Fredlund and Xing’s equation. A simple model composed of three lines is proposed for estimating the hydraulic conductivity of unsaturated soil. The model parameters can be conveniently calibrated from the measured soil–water characteristic curve and saturated hydraulic conductivity. Finally, the proposed model is validated by the experimental data from different soils. The proposed model provides a simple approach to estimating the hydraulic conductivity of unsaturated soil, which is more convenient for practical application. |
| first_indexed | 2024-03-08T04:00:29Z |
| format | Article |
| id | doaj.art-542b4b12fa7a480dad545f6ad17d86a7 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-08T04:00:29Z |
| publishDate | 2024-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-542b4b12fa7a480dad545f6ad17d86a72024-02-09T15:08:24ZengMDPI AGApplied Sciences2076-34172024-02-01143125410.3390/app14031254A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated SoilZiran Zhang0Maosheng Zhang1Department of Geological Engineering, Chang’an University, Xi’an 710054, ChinaSchool of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, ChinaDescribing the hydraulic conductivity of unsaturated soil is very important in predicting water transport. Most current models have complex forms and generally need to be calibrated by the measured unsaturated hydraulic conductivity curve. A simple model, by which it is possible to conveniently predict the unsaturated hydraulic conductivity, is proposed in this study. The soil–water characteristic curve and hydraulic conductivity curve are separated into three parts. The soil–water characteristic curve is represented by Fredlund and Xing’s equation. A simple model composed of three lines is proposed for estimating the hydraulic conductivity of unsaturated soil. The model parameters can be conveniently calibrated from the measured soil–water characteristic curve and saturated hydraulic conductivity. Finally, the proposed model is validated by the experimental data from different soils. The proposed model provides a simple approach to estimating the hydraulic conductivity of unsaturated soil, which is more convenient for practical application.https://www.mdpi.com/2076-3417/14/3/1254hydraulic conductivityunsaturated soilestimationcapillaryadsorption |
| spellingShingle | Ziran Zhang Maosheng Zhang A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil Applied Sciences hydraulic conductivity unsaturated soil estimation capillary adsorption |
| title | A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil |
| title_full | A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil |
| title_fullStr | A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil |
| title_full_unstemmed | A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil |
| title_short | A Simple Model for Estimating the Hydraulic Conductivity of Unsaturated Soil |
| title_sort | simple model for estimating the hydraulic conductivity of unsaturated soil |
| topic | hydraulic conductivity unsaturated soil estimation capillary adsorption |
| url | https://www.mdpi.com/2076-3417/14/3/1254 |
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