Research Article
A Study of the Anchorage Body Fracture Evolution and the Energy Dissipation Rule: Comparison between Tensioned Rock Bolts and Torqued Rock Bolts
Table 2
Calibrated mechanical parameters of blocks and joints of the coal.
| | | Density (kg/m3) | Young’s modulus(GPa) | Cohesion(MPa) | Friction(°) | Tensile strength(MPa) | | Block | 1400 | 0.79 | 1.6 (ε= 0)
1.1 (ε = 0.04)
0.6 (ε = 0.15) | 27 | 0.9 | | Joint | Normal stiffness(GPa/m) | Tangential stiffness(GPa/m) | Cohesion(MPa) | Friction(°) | Tensile strength(MPa) | | 113 | 45.2 | 1.3 | 18 | 0.4 |
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