Table 1 Arrangement of triaxial shear tests of soft rock.
From: Statistical damage constitutive model of soft rock based on Improved Hoek-Brown strength criterion
Serial number | Confining pressure (MPa) | Test method |
---|---|---|
A1 | 0.0 | Axial loading |
A2 | 5.0 | Axial loading |
A3 | 10.0 | Axial loading |
A4 | 15.0 | Axial loading |
A5 | 20.0 | Axial loading |
A6 | 25.0 | Axial loading |
A7 | 30.0 | Axial loading |
B1 | 20.0 | Radial unloading confining pressure, axial pressure unchanged |
B2 | 25.0 | Radial unloading confining pressure, axial pressure unchanged |
B3 | 30.0 | Radial unloading confining pressure, axial pressure unchanged |