Table 3 Comparison of peak strength of different pressure paths.
From: Statistical damage constitutive model of soft rock based on Improved Hoek-Brown strength criterion
Confining pressure /MPa | Loading triaxial test | Unloading confining pressure triaxial test |
---|---|---|
20 | 31.7 | 20.0 |
25 | 31.2 | 23.5 |
30 | 28.5 | 27.0 |