Research Article
Study on Pressure Relief Effect of Rock Mass with Different Borehole Parameters
Table 1
Physicomechanical parameters of numerical test model.
| | Parameter | Value |
| | Minimum particle diameter (mm) | 0.3 | | Maximum particle diameter (mm) | 0.5 | | Parallel bond tensile strength (MPa) | 22 | | Parallel bond cohesive force (MPa) | 56.5 | | Stiffness ratio | 1.51 | | Contact bond gap (mm) | 0.05 | | Density (kg/m3) | 2500 | | Contact modulus of the particle (GPa) | 10.2 | | Parallel bond deformation modulus (GPa) | 16.2 | | Porosity | 0.1 |
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