Research Article
Stability Analysis of Downstream Dam Expansion Tailings Pond
Table 2
Physical property and force index table of tailing pond.
| | Material name | Volumetric weight | Effective stress shear index | | Natural unit weight γ (kN/m3) | Floating bulk density γ′ (kN/m3) | C (kPa) | φ (°) | | Mean value | Standard deviation | Mean value | Standard deviation | | Mean value | Standard deviation | Mean value | Standard deviation | Water | Underwater | Water | Under water | Water | Under water | Water | Under water |
| | Starter dam | 18.0 | 0.2 | 10.0 | 0.2 | 0.0 | 0.0 | — | — | 28.0 | 27.0 | 3.4 | 3.4 | | Tailings silt | 16.9 | 0.5 | 9.2 | 0.6 | 21.4 | 15.7 | 4.4 | 4.5 | 24.6 | 22.1 | 3.4 | 3.7 | | Tailings silty clay | 14.6 | 0.2 | 7.9 | 0.2 | 33.6 | 25.3 | 3.6 | 3.8 | 21.6 | 17.6 | 2.6 | 3.1 | | Tailings subdam | 20.5 | 0.2 | 12.3 | 0.2 | 12.1 | 5.6 | 1.8 | 1.9 | 29.0 | 26.0 | 2.0 | 2.2 | | Dam foundation | 24.0 | — | 24.0 | — | 30.0 | 30.0 | — | — | 38.0 | 38.0 | — | — |
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