Research Article
Permeability Prediction in Deep Coal Seam: A Case Study on the No. 3 Coal Seam of the Southern Qinshui Basin in China
Table 2
The parameters for predicting permeability in the SQB.
| | Parameters | Values |
| | Elastic modulus, (GPa) | 3.36 | | Poisson's ratio, | 0.30 | | Biot's coefficient, | 0.80 | | Coefficient of the thermal deformation, (K−1) | 38.13 × 10−6 | | Langmuir volume, (m3/t) | 31.43 | | Adsorption heat, (J) | 1.70 × 104 | | Adsorption parameter coefficient, (MPa−1·K−0.5) | 8.95 × 10−3 | | Sorption swelling coefficient, (t/m3) | 2.23 × 10−4 | | Initial permeability, (mD) | 3.00 | | Initial porosity, (%) | 0.90 | | Effective coal matrix deformation factor, | 0.25 |
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