Table 2 Rock material mechanical parameters.
From: PPV distribution of sidewalls induced by underground cavern blasting excavation
Density ρ/(kg/m3) | Elasticity modulus E/(GPa) | Poisson’s ratio μ | Yield strength σ/MPa | Tangent modulus Et/GPa | Compressive strength Rc/MPa | Firmness coefficient f |
|---|---|---|---|---|---|---|
2700 | 53.3 | 0.21 | 100 | 8.0 | 120 | 5.80 ~ 12.55 |
