Research Article
Analysis of Mechanical and Acoustic Emission Characteristics of Rock Materials with Double-Hole Defects Based on Particle Flow Code
Table 1
Physico-mechanical parameters of sandstone model based on PFC.
| | Parameter | Value | Parameter | Value |
| | Minimum particle diameter (mm) | 0.4 | Porosity | 0.1 | | Particle diameter ratio | 1.5 | Parallel bond friction angle (°) | 38 | | Density (kg/m3) | 2440 | Parallel bond tensile strength (MPa) | 27.8 | | Contact modulus of the particle (GPa) | 4.0 | Normal critical damping ratio | 0.5 | | Parallel bond deformation modulus (GPa) | 27 | Parallel bond cohesive force (MPa) | 39 | | Contact bond gap (mm) | 0.05 | Stiffness ratio | 1.0 |
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