One−Dimensional Seepage of Unsaturated Soil Based on Soil−Water Characteristic Curve
Abstract
:1. Introduction
2. Experimental Tests of SWCC
3. Numerical Analysis
3.1. Soil Water Characteristic Curve
3.2. Mass Conservation Equation
3.3. Unsaturated Permeability Function
4. Numerical Results and Discussion
5. Conclusions
Author Contributions
Funding
Institutional Review Board Statement
Informed Consent Statement
Data Availability Statement
Conflicts of Interest
References
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Symbol | Significance | Unit |
---|---|---|
ku | Unsaturated permeability coefficient | m/s |
ks | Saturated permeability coefficient | m/s |
v | Seepage velocity | m/s |
ua | Pore gas pressure | kPa |
uw | Pore water pressure | kPa |
θw | Volumetric water content | 1 |
θs | Saturated volume water content | 1 |
t | Time | s |
i | Hydraulic gradient | 1 |
st | Air-entry value | kPa |
z | Depth | m |
Matric suction | kPa | |
n | Porosity | 1 |
nw | Water porosity | 1 |
Soil-water force coefficient | 1 |
Soils | ks (cm/h) | β | θs | θr | st (kPa) |
---|---|---|---|---|---|
Sand | 20 | 2.293 | 0.32 | 0.028 | 3 |
Silty loam | 0.05 | 4.507 | 0.45 | 0.24 | 8 |
Microsilica | 0.0392 | 7.351 | 0.52 | - | 32 |
Soils | α | n | m |
---|---|---|---|
Sand | 0.1757 | 1.6085 | 0.3783 |
Silty loam | 0.1197 | 1.4836 | 0.326 |
Microsilica | 0.0049 | 1.4733 | 0.3213 |
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Shao, L.; Wu, S.; Guo, X.; Wen, T. One−Dimensional Seepage of Unsaturated Soil Based on Soil−Water Characteristic Curve. Processes 2022, 10, 2564. https://doi.org/10.3390/pr10122564
Shao L, Wu S, Guo X, Wen T. One−Dimensional Seepage of Unsaturated Soil Based on Soil−Water Characteristic Curve. Processes. 2022; 10(12):2564. https://doi.org/10.3390/pr10122564
Chicago/Turabian StyleShao, Longtan, Shixiong Wu, Xiaoxia Guo, and Tiande Wen. 2022. "One−Dimensional Seepage of Unsaturated Soil Based on Soil−Water Characteristic Curve" Processes 10, no. 12: 2564. https://doi.org/10.3390/pr10122564
APA StyleShao, L., Wu, S., Guo, X., & Wen, T. (2022). One−Dimensional Seepage of Unsaturated Soil Based on Soil−Water Characteristic Curve. Processes, 10(12), 2564. https://doi.org/10.3390/pr10122564