Table 4 Microscopic parameters of burn rock model.
From: Study on blasting fragmentation mechanism of burnt rock in open-pit coal mine
Microscopic parameters | Minimum radius of particles (mm) | Particle radius ratio | Particle density (kg·m−3) | Elastic modulus (GPa) |
|---|---|---|---|---|
Values | 2.5 | 1.66 | 2160 | 3.45 |
Poisson ratio | Contact modulus (GPa) | Force of cohesion (MPa) | Friction factor | Angle of internal friction (°) |
0.27 | 2.95 | 7 | 0.5 | 32 |
