Research Article
Back Analysis of the Permeability Coefficient of a High Core Rockfill Dam Based on a RBF Neural Network Optimized Using the PSO Algorithm
Table 1
Permeability coefficient of the Nuozhadu dam (cm/s).
| | Material | Range of permeability coefficient | Material | Value of permeability coefficient |
| | Core (-direction) | 1 × 10−7~1 × 10−5 | Filter material | 0.2 | | Core (-direction) | 1 × 10−8~1 × 10−5 | Fine rockfill material | 0.2 | | Filter material I | 5 × 10−3~5 × 10−2 | Coarse rockfill material I | 1 | | Coarse rockfill material II | 5 × 10−3~5 × 10−2 | Cofferdam | 1 | | | | Weakly weathered rock | 5 × 10−5 | | | | Cutoff grouting | 5 × 10−6 | | | | Slightly weathered rock | 1 × 10−5 |
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