Research Article
Discrete Element Modeling on Mechanical Behavior of Heterogeneous Rock Containing X-Shaped Fissure under Uniaxial Compression
Table 1
The microparameters used in the PFC2D model.
| | Microparameters | Values |
| | Particle density (kg·m-3) | 2560 | | Minimum particle size (mm) | 0.11 | | Particle size ratio | 1.66 | | Particle contact modulus (GPa) | 14 | | Particle stiffness ratio | 3.0 | | Particle friction coefficient | 1.2 | | Homogeneity factor | 5 | | Parallel bonding modulus (GPa) | 14 | | Parallel bonding stiffness ratio | 3.0 | | Characteristic value of parallel bond tensile strength (MPa) | 78.6 | | Characteristic value of parallel bond cohesion (MPa) | 138.6 | | Friction angle of parallel bond (°) | 30.0 |
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