Table 2: Design criteria
Item |
Description |
Value |
Maximum reservoir level |
Summer PMF with stop logs |
El. 217.36m |
Normal reservoir level |
Summer with stop logs |
El. 214.74m |
Slope stability analysis: safety factory against slope failure |
Static |
1.5 |
|
Rapid draw down |
1.3 |
|
Post earthquake liquefied ground |
1.1 |
Cyclic pore pressure safety factor against liquefaction |
i) >=1.4 |
i) Use full effective stress strength and static water table |
|
ii) 1.4 to 1.1 |
ii) Interpolate between i) and iii) |
|
iii) <=1.1 |
iii) Residual strength (Seed and Harder 1990) |
Deformation |
Minimum post MCE dam crest |
El. 217.36m |
|
Horizontal deformation |
<=1m or 10% of layer thickness |