Research Article
Mechanical Characteristics and Energy Evolution Laws for Red Bed Rock of Badong Formation under Different Stress Paths
Table 1
The mechanical parameters of b2 rocks under loading conditions.
| | Specimen no. | σ3 (MPa) | E0 (GPa) | μ | PS parameters | RS parameters | β (°) | | σp (MPa) | c (MPa) | φ (°) | σr (MPa) | c (MPa) | φ (°) |
| | b2-2-1 | 2 | 21.13 | 0.244 | 107.562 | 9.959 | 56.631 | 33.581 | 5.995 | 36.707 | 77°14′ | | b2-2-2 | 4 | 16.88 | 0.236 | 109.312 | 41.566 | 72°14′ | | b2-2-3 | 8 | 17.63 | 0.237 | 125.031 | 49.939 | 65°22′ | | b2-2-4 | 16 | 31.20 | 0.207 | 257.858 | 89.641 | 73°18′ |
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σp is PS; σr is RS; β is the angle of rupture.
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