Research Article
Experimental Study on Seepage Anisotropy of a Hexagonal Columnar Jointed Rock Mass
Table 2
The fitting parameters of the Izabsh equation.
| | Sample number | Maximum principal stress σ1 (MPa) | Fitting coefficient λ | Fitting coefficient m | Coefficient of determination R2 |
| | SS0° | 1 | 9.326 E + 13 | 0.85 | 0.9975 | | 2 | 9.744 E + 13 | 0.89 | 0.9992 | | 3 | 9.798 E + 13 | 0.92 | 0.9995 | | 4 | 1.072 E + 14 | 0.89 | 0.9995 | | 5 | 1.140 E + 14 | 0.82 | 0.9984 | | 6 | 9.529 E + 13 | 0.84 | 0.9993 |
| | SS15° | 1 | 9.895 E + 13 | 0.80 | 0.9892 | | 2 | 1.142 E + 14 | 0.79 | 0.9898 | | 3 | 1.139 E + 14 | 0.77 | 0.9914 | | 4 | 1.067 E + 14 | 0.78 | 0.9945 | | 5 | 1.006 E + 14 | 0.75 | 0.9966 | | 6 | 7.177 E + 13 | 0.77 | 0.9988 |
| | SS30° | 1 | 1.043 E + 14 | 0.81 | 0.9930 | | 2 | 1.229 E + 14 | 0.78 | 0.9928 | | 3 | 1.353 E + 14 | 0.76 | 0.9888 | | 4 | 1.395 E + 14 | 0.69 | 0.9833 | | 5 | 1.266 E + 14 | 0.68 | 0.9847 | | 6 | 9.560 E + 13 | 0.71 | 0.9921 |
| | SS45° | 1 | 1.140 E + 14 | 0.78 | 0.9864 | | 2 | 1.117 E + 14 | 0.82 | 0.9900 | | 3 | 1.100 E + 14 | 0.75 | 0.9908 | | 4 | 6.255 E + 13 | 0.85 | 0.9992 | | 5 | 5.451 E + 13 | 0.87 | 0.9993 | | 6 | 4.901 E + 13 | 0.86 | 0.9993 |
| | SS60° | 1 | 1.069 E + 14 | 0.78 | 0.9954 | | 2 | 1.202 E + 14 | 0.86 | 0.9983 | | 3 | 1.226 E + 14 | 0.89 | 0.9974 | | 4 | 1.207 E + 14 | 0.87 | 0.9983 | | 5 | 1.188 E + 14 | 0.80 | 0.9989 | | 6 | 9.357 E + 13 | 0.83 | 0.9989 |
| | SS75 | 1 | 5.369 E + 13 | 1.02 | 0.9863 | | 2 | 6.519 E + 13 | 1.02 | 0.9944 | | 3 | 7.757 E + 13 | 0.99 | 0.9950 | | 4 | 9.339 E + 13 | 0.95 | 0.9919 | | 5 | 1.100 E + 14 | 0.96 | 0.9959 | | 6 | 1.496 E + 14 | 0.93 | 0.9928 | | SS90° | 1 | 5.618 E + 13 | 1.00 | 0.9903 | | 2 | 8.247 E + 13 | 0.91 | 0.9978 | | 3 | 9.540 E + 13 | 0.93 | 0.9982 | | 4 | 9.515 E + 13 | 0.98 | 0.9977 | | 5 | 1.364 E + 14 | 0.83 | 0.9857 | | 6 | 1.497 E + 14 | 0.83 | 0.9877 |
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