|
| Parameter | Value | Sources | Parameter | Value | Sources |
|
| Young’s modulus of coal, E (MPa) | 2713 | [22] | CH4 Langmuir volume constant, VL (m3/kg) | 0.043 | [22] |
| Young’s modulus of the coal grains, Es (MPa) | 4070 | [22] | Specific heat capacity of gas, Cg (J/kg·K) | 1.625 × 103 | [16] |
| Initial porosity, (—) | 0.01 | [22] | Specific heat capacity of coal, Cs (J/kg·K) | 1.25 × 103 | [16] |
| Density of coal, (kg/m3) | 1250 | [22] | Pressure coefficient, c1 (MPa−1) | 0.07 | [16] |
| Poisson’s ratio of coal, (—) | 0.34 | [22] | Sorption strain coefficient, (kg/m3) | 0.06 | [18] |
| Initial gas permeability, (m2) | 1.09 × 10−18 | [22] | Volumetric coefficient of matrix, (K−1) | 2.4 × 10−5 | [18] |
| Density of CH4 at standard condition, (kg/m3) | 0.717 | [16] | Klinkenberg effect, b (Pa) | 1.44 × 105 | [18] |
| Gas dynamic viscosity, (N·s/m2) | 1.84 × 10−5 | [16] | Temperature coefficient, c2 (K−1) | 0.02 | [16] |
| CH4 Langmuir pressure constant, PL (MPa) | 1.57 | [16] | Thermal conductivity of coal, (J/(m·s·K)) | 0.2 | [16] |
|
