Research Article

Damage Evolution of Rocks Containing a Set of Cross-Joints Based on Acoustic Emission Characteristics

Table 1

Meso-parameters for the PBM [14].

ParameterValue

Minimum particle diameter (mm)0.3
Maximum particle diameter (mm)0.5
Contact modulus of the particle (GPa)10
Parallel bond deformation modulus (GPa)16
Contact bond gap (mm)0.05
Porosity0.1
Density (kg/m3)2500
Parallel bond tensile strength (MPa)21.7
Parallel bond cohesive force (MPa)56
Stiffness ratio1.5