Influence of Parallel-Joint Position on Mechanical Behavior and Acoustic Emission Characteristics of Rock Pillar

Table 1

Physicomechanical parameters of PFC 2D test model [19].

Parameter	Value
Minimum particle diameter (mm)	0.3
Maximum particle diameter (mm)	0.5
Contact modulus of the particle (GPa)	10.2
Parallel-bond deformation modulus (GPa)	16.2
Contact bond gap (mm)	0.05
Porosity	0.1
Density (kg/m^3)	2500
Parallel-bond tensile strength (MPa)	22
Parallel-bond cohesive force (MPa)	56.5
Stiffness ratio	1.51