Research Article
A Fluid-Solid Coupling Mathematical Model of Methane Driven by Water in Porous Coal
Table 4
Space-time distribution of the pore pressure gradient at the axial monitoring points.
| Time (min) | Monitoring point (mm) | 0 | 10 | 20 | 30 | 40 | 50 | 60 | 70 | 80 | 90 | 100 | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) | Pore pressure (MPa/m) |
| 10 | 4.623 | 4.119 | 3.720 | 3.422 | 3.225 | 3.135 | 3.719 | 4.893 | 6.946 | 11.455 | 41.869 | 20 | 4.806 | 4.325 | 3.966 | 3.704 | 3.526 | 3.423 | 3.930 | 5.049 | 6.944 | 10.963 | 36.354 | 30 | 4.947 | 4.460 | 4.091 | 3.817 | 3.622 | 3.497 | 3.981 | 5.071 | 6.899 | 10.751 | 34.594 |
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