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Geofluids
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2021
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Article
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Tab 1
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Research Article
Particle Flow Simulation of Failure Characteristics of Deep Rock Influenced by Sample Height-to-Width Ratios and Initial Stress Level under True-Triaxial Unloading
Table 1
Microparameters of the calibrated PFC3D model.
Microparameter
Description
Calibrated value
(mm)
Minimum particle radius
1.5
Particle radius ratio
1.66
(GPa)
Effective modulus
15
Normal-to-shear stiffness ratio
1.5
Particle friction coefficient
0.5
(MPa)
Bond effective modulus
15
Bond normal-to-shear stiffness ratio
1.5
(MPa)
Normal bond strength (
)
(MPa)
Shear bond strength (
)
Bond width multiplier
1