Table 1 The calculation parameters of numerical mode.
Parameter | Rock | Constant resistance bolt |
|---|---|---|
Young’s modulus (GPa) | 21.3 | 210 |
Friction angle (°) | 32.7 | 30 |
Uniaxial compressive strength (MPa) | 165 | 350 |
Density (kg/m3) | 2500 | 7800 |
Homogeneity index | 3 | 100 |
Poisson’s ratio | 0.24 | 0.27 |
