Name | Multiplicity γ kg/m3 | Internal frictional angle Φ/˚ | Elasticity Modulus E/GPa | Poisson ratio μ |
Backfill | 2000 | 28 | 1.7e−3 | 0.35 |
Mudstone | 2200 | 35 | 0.2 | 0.23 |
Concrete | 2400 | ― | 30 | 0.20 |