Research Article
The Seepage-Creep Numerical Simulation Model of Coal Measures Sandstone Based on Particle Discrete Element
Table 2
Mesoscopic parameters of coal measures sandstone.
| | Parameters | Value | Parameters | Value |
| | Particle density (g/cm3) | 2.50 | Elastic modulus (GPa) | 5.9 | | Normal stiffness (MPa) | 1.5 | Parallel bond stiffness ratio | 2.5 | | Stiffness ratio | 1.0 | Normal strength of parallel bond (MPa) | 51 | | Particle damping coefficient | 0.7 | Shear strength of parallel bond (MPa) | 50 |
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