Research Article
Numerical Simulation of Rock Failure Process with a 3D Grain-Based Rock Model
Table 1
Elastic block and contact mechanical properties used in the model.
| Block properties |
| | Wellbore | TWC | Young’s modulus | 51 GPa | Poisson’s ratio | 0.25 | Density | 2650 kg/m3 |
| Contact properties | | Wellbore | TWC | Normal stiffness | 5e10 Pa/m | 5e13 Pa/m | Shear stiffness | 2.5e10 Pa/m | 2.5e13 Pa/m | Peak friction angle | 20° | 30° | Residual friction angle | 40° | Dilation angle | 10° | Peak tensile strength | Variable from distribution | Residual tensile strength | 0 | Peak cohesive strength | 2.5 tensile strength | Residual cohesive strength | 0 |
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