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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.

Table 4

Prediction examples of the two models

      Predicted value
Error
 Model IModel IIModel IModel II
Soils(DD) g/cm3(WPH) Cm(QAC) kg/m2(PT) hMeasured value %%%%%
Soil 1 1.3 100 22.57 22.78 20.94 0.94 7.22 
Soil 1 1.3 100 26.44 26.21 26.24 0.87 0.77 
Soil 2 1.4 100 12 37.01 35.03 33.79 5.34 8.70 
Soil 2 1.4 100 24 38.14 35.11 33.33 7.94 12.60 
Soil 3 1.3 100 32.07 29.64 32.87 7.58 2.49 
Soil 3 1.4 100 19.25 20.70 20.35 7.53 5.71 
Soil 4 1.4 60 12 22.32 24.25 22.00 8.63 1.42 
Soil 4 1.4 120 12 42.33 39.16 42.64 7.48 0.73 
      Predicted value
Error
 Model IModel IIModel IModel II
Soils(DD) g/cm3(WPH) Cm(QAC) kg/m2(PT) hMeasured value %%%%%
Soil 1 1.3 100 22.57 22.78 20.94 0.94 7.22 
Soil 1 1.3 100 26.44 26.21 26.24 0.87 0.77 
Soil 2 1.4 100 12 37.01 35.03 33.79 5.34 8.70 
Soil 2 1.4 100 24 38.14 35.11 33.33 7.94 12.60 
Soil 3 1.3 100 32.07 29.64 32.87 7.58 2.49 
Soil 3 1.4 100 19.25 20.70 20.35 7.53 5.71 
Soil 4 1.4 60 12 22.32 24.25 22.00 8.63 1.42 
Soil 4 1.4 120 12 42.33 39.16 42.64 7.48 0.73 

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