Table 2: Relative Data and its normalization of Qinghong Expressway.

Evaluation factor Original Normalization Evaluation factor Original Normalization
Thickness (mm)
Tensile strength (KN/m)
Soil Nails Spacing (m)
Cohesion of soil ( kPa )
Internal friction angle (°)
Bulk density (KN/m3)
Permeability coefficient (cm/s)
Compactness (%)
Ratio of pore pressure
Slope angel (°)
Slope length (m)
Lithology
14 mm 0.75 Vegetation coverage (%)
Root development
Planting suitability
Rainfall intensity (mm/h)
Rainfall duration (d)
Daily rainfall capacity (mm)
Construction technique
Maintenance condition
Maintenance time (d)
Temperature (°C)
Humidity(%)
PH value
40% 0.59
2 KN/m 0.5 good 0.7
1 m 0.95 good 0.7
62.92kPa 0.899 2.5 mm/h 0.78
23.09° 0.577 0.5 day 0.938
18.7 KN/m3 0.221 5 mm 0.964
3.2×10-6cm/s 0.72 good 0.7
90% 0.8 moderate 0.5
0.3 0.2 45 day 0.5
40° 0.66 16°C 0.533
15 m 0.17 50% 0.833
poor 0.3 8.4 0.35