Research Article
Study on Numerical Simulation of Geometric Elements of Blasting Funnel Based on PFC5.0
Table 2
Microscopic parameters of the limestone model.
| | Model | Parameter name | Variable parameter | Numerical value |
| | Particle/linear bond part | cm_Dup (1) | Maximum radius (mm) | 2.49 | | | Particle diameter ratio | 1.66 | | cm_densityVal | Density (kg/m3) | 2000 | | lnm_emod/pbm_emod | Elasticity modulus (GPa) | 55 | lnm_krat
pbm_krat | Stiffness ratio | 1.5 | lnm_fric
pbm_fric | Friction coefficient | 0.4 |
| | Parallel bonding part | pbm_bemod | Elasticity modulus | 55 | | pbm_bkrat | Stiffness ratio | 1.5 | | pbm_ten_m | Mean normal strength (MPa) | 73 | | pbm_coh_m | Mean shear strength (MPa) | 150 | | pbm_coh_sd | Standard deviation of shear strength (MPa) | 10 | | pbm_fa | Internal friction angle (°) | 30 |
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