|
| Parameters | Value | Source |
|
| Young’s modulus of coal (, MPa) | 850 | Lab measurement |
| Poisson’s ratio of coal () | 0.35 | Lab measurement |
| Initial cohesion of coal (, MPa) | 0.72 | Lab measurement |
| Residual cohesion of coal (, MPa) | 0.30 | Lab measurement |
| Friction angle of coal (, °) | 32 | Lab measurement |
| Coal density (, kg/m3) | 1375 | Lab measurement |
| Temperature of coal (, K) | 293 | Field data |
| Average thickness of coal (, m) | 1.8 | Field data |
| Horizontal principal stress (, MPa) | 14 | Field data |
| Initial coal permeability (, mD) | 0.0015 | Field data |
| Initial porosity of coal () | 0.058 | Lab measurement |
| Fracture volume compressibility (, MPa−1) | 0.045 | Lab measurement |
| Initial gas pressure (, MPa) | 2.5 | Field data |
| Equivalent plastic shear strain from which the residual behavior starts () | 0.012 | Lab measurement |
| Molar mass of methane (, g/mol) | 16 | Specified value |
| Molar volume of methane at the standard condition (, L/mol) | 22.4 | Specified value |
| Dynamic methane viscosity (, Pa·s) | | Specified value |
| Universal gas constant (, J/(mol·K)) | 8.41351 | Specified value |
| Langmuir pressure (, MPa) | 1.32 | Lab measurement |
| Langmuir volume (, m3/t) | 22.5 | Lab measurement |
| Sorption time (, d) | 0.52 | Lab measurement |
| Langmuir volumetric strain constant () | 0.0038 | Lab measurement |
| Cleat volume compressibility (, MPa−1) | 0.045 | Lab measurement |
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