Table 2.
The measured points of failure at the stress space for the sandstone (recalculated values)24.
| No. samples | Confining pressure (σ3 = σ2) (MPa) | Axial pressure (σ1) (MPa) |
|---|---|---|
| I | 0 | 70 |
| II | 28 | 235 |
| III | 56 | 318 |
| IV | 157 | 491 |
| V | 251 | Min. 717 |
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