In experiments on the permeability-reducing effect performed on four kinds of sandy soil samples, the two models described above were used to predict the reduced infiltration rates under specific infiltration conditions. The prediction results are listed in Table 4.
Prediction examples of the two models
| . | . | . | . | . | . | Predicted value . | Error . | ||
|---|---|---|---|---|---|---|---|---|---|
| . | . | . | . | . | . | Model I . | Model II . | Model I . | Model II . |
| Soils . | (DD) g/cm3 . | (WPH) Cm . | (QAC) kg/m2 . | (PT) h . | Measured value % . | % . | % . | % . | % . |
| Soil 1 | 1.3 | 100 | 1 | 0 | 22.57 | 22.78 | 20.94 | 0.94 | 7.22 |
| Soil 1 | 1.3 | 100 | 2 | 0 | 26.44 | 26.21 | 26.24 | 0.87 | 0.77 |
| Soil 2 | 1.4 | 100 | 1 | 12 | 37.01 | 35.03 | 33.79 | 5.34 | 8.70 |
| Soil 2 | 1.4 | 100 | 1 | 24 | 38.14 | 35.11 | 33.33 | 7.94 | 12.60 |
| Soil 3 | 1.3 | 100 | 3 | 0 | 32.07 | 29.64 | 32.87 | 7.58 | 2.49 |
| Soil 3 | 1.4 | 100 | 3 | 0 | 19.25 | 20.70 | 20.35 | 7.53 | 5.71 |
| Soil 4 | 1.4 | 60 | 3 | 12 | 22.32 | 24.25 | 22.00 | 8.63 | 1.42 |
| Soil 4 | 1.4 | 120 | 3 | 12 | 42.33 | 39.16 | 42.64 | 7.48 | 0.73 |
| . | . | . | . | . | . | Predicted value . | Error . | ||
|---|---|---|---|---|---|---|---|---|---|
| . | . | . | . | . | . | Model I . | Model II . | Model I . | Model II . |
| Soils . | (DD) g/cm3 . | (WPH) Cm . | (QAC) kg/m2 . | (PT) h . | Measured value % . | % . | % . | % . | % . |
| Soil 1 | 1.3 | 100 | 1 | 0 | 22.57 | 22.78 | 20.94 | 0.94 | 7.22 |
| Soil 1 | 1.3 | 100 | 2 | 0 | 26.44 | 26.21 | 26.24 | 0.87 | 0.77 |
| Soil 2 | 1.4 | 100 | 1 | 12 | 37.01 | 35.03 | 33.79 | 5.34 | 8.70 |
| Soil 2 | 1.4 | 100 | 1 | 24 | 38.14 | 35.11 | 33.33 | 7.94 | 12.60 |
| Soil 3 | 1.3 | 100 | 3 | 0 | 32.07 | 29.64 | 32.87 | 7.58 | 2.49 |
| Soil 3 | 1.4 | 100 | 3 | 0 | 19.25 | 20.70 | 20.35 | 7.53 | 5.71 |
| Soil 4 | 1.4 | 60 | 3 | 12 | 22.32 | 24.25 | 22.00 | 8.63 | 1.42 |
| Soil 4 | 1.4 | 120 | 3 | 12 | 42.33 | 39.16 | 42.64 | 7.48 | 0.73 |