Research Article
Determination of the Ultimate Underground Mining Depth considering the Effect of Granular Rock and the Range of Surface Caving
Table 3
The parameters of rock mass in the southeast mining area.
| Material | (g·cm−3) | (MPa) | (MPa) | (°) | c (MPa) | Em (GPa) | |
| Hanging wall | 2.7 | 5.99 | 1.07 | 35 | 0.34 | 8.82 | 0.31 | Foot wall | 2.7 | 8.51 | 1.71 | 52 | 0.67 | 17.31 | 0.27 | Ore body | 3.7 | 10.83 | 2.21 | 53 | 0.85 | 23.1 | 0.21 | Granular rock | 2.0 | 0.05 | 0.01 | 18 | 0.01 | 0.2 | 0.4 |
|
|