Table 4 The fitting results of strain of coal with time during CH4 seepage.
From: Experimental study of gas flow and coal deformation at different levels of axial/radial stress ratio
σ% | εs-X | εs-Y | εs-V | ||||||
|---|---|---|---|---|---|---|---|---|---|
As | Bs | R2 | As | Bs | R2 | As | Bs | R2 | |
1.5 | 0.96 | 0.71 | 0.99 | 0.13 | 0.79 | 0.99 | 2.06 | 0.71 | 0.99 |
2.0 | 0.94 | 0.68 | 0.98 | 0.12 | 0.79 | 0.94 | 2.02 | 0.68 | 0.99 |
2.5 | 0.71 | 0.69 | 0.97 | 0.10 | 0.79 | 0.98 | 1.52 | 0.70 | 0.96 |
3.0 | 0.62 | 0.69 | 0.99 | 0.09 | 0.79 | 0.98 | 1.32 | 0.69 | 0.97 |
3.5 | 0.51 | 0.24 | 0.95 | 0.06 | 0.79 | 0.99 | 1.07 | 0.25 | 0.96 |
