Table 4 Mechanical and hydraulic characteristics of the materials used in the experiments
From: Critical hydraulic gradients for seepage-induced failure of landslide dams
Sample name | Test no. | Sediment mixture (%) | D 50 (mm) | C u | C c | Gravel (%) | Sand (%) | Fines (%) | K (m/s) |
|---|---|---|---|---|---|---|---|---|---|
Sandfill dam (SD) | Exp 1 | Silica sand 5 (100) | 0.799 | 2.474 | 1.385 | - | 99.5 | 0.5 | 5.5 × 10−4 |
Gravelly dam I (GV-I) | Exp 2 | Silica sand 8-gravel mix (40:60) | 0.284 | 79.870 | 0.069 | 34 | 49.6 | 16.4 | 3.8 × 10−5 |
Gravelly dam II (GV-II) | Exp 3 | Silica sand 8-pebbles-gravel mix (30:30:40) | 0.201 | 3.520 | 1.047 | 22.6 | 62.9 | 14.5 | 6.0 × 10−5 |
Silica sand no. 8 | Exp 4 ~ 25 | Silica sand 8 (100) | 0.124 | 1.726 | 1.195 | - | 67.1 | 32.9 | 5.8 × 10−5 |