Research Article
Design and Application of Blasting Parameters for Presplitting Hard Roof with the Aid of Empty-Hole Effect
Table 2
Rock mechanical parameters.
| | Density (kg/m3) | Elasticity modulus (GPa) | μ | Yield strength (MPa) | Tangent modulus (MPa) | Hardening coefficient | Failure strain | C (s) | |
| | 2450 | 60 | 0.25 | 58.2 | 61.3 | 1.25 | 0.1 | 2.5 | 4 |
|
|
