Table 2 Peak strength and elastic modulus of sandstone with varying cross-cutting crack angles under uniaxial loading.
Rock type | Specimen ID | Peak stress (MPa) | Peak strain (/10−3) | Elastic modulus (GPa) |
|---|---|---|---|---|
Intact Rock | WZ−1 WZ−2 WZ−3 | 65.6 65.8 65.3 | 5.32 5.29 5.28 | 32.6 32.9 32.7 |
30° Fissure | LX−30−1 LX−30−2 LX−30−3 | 36.5 36.2 36.3 | 3.8 3.83 3.82 | 21.7 21.5 21.4 |
45° Fissure | LX−45−1 LX−45−2 LX−45−3 | 47.9 48.2 47.8 | 4.16 4.11 4.12 | 26.1 25.7 26.4 |
60° Fissure | LX−60−1 LX−60−2 LX−60−3 | 42.8 42.9 43.2 | 3.96 4.01 3.94 | 22.9 23.4 23.2 |
90° Fissure | LX−90−1 LX−90−2 LX−90−3 | 36.1 36.3 35.9 | 4.39 4.37 4.41 | 23.1 22.7 22.9 |
120° Fissure | LX−120−1 LX−120−2 LX−120−3 | 33.2 33.1 33.4 | 4.57 4.61 4.59 | 19.7 19.4 19.5 |
150° Fissure | LX−150−1 LX−150−2 LX−150−3 | 26.3 25.9 26.2 | 4.02 4.08 4.09 | 18.8 18.9 18.5 |
