Research Article
Brittleness Evaluation of Shale Based on the Brazilian Splitting Test
| | Coring depth | Group | Sample number | Test angle (°) | Loading rate (mm/min) |
| | Outcrop | 1 | A-1 | / | 0.01 | | A-2 | 0.02 | | A-3 | 0.04 | | A-4 | 0.05 |
| | 2320.80 m–2322.37 m | 2 | B-1 | 0° | 0.01 | | B-2 | 0.02 | | B-3 | 0.04 | | B-4 | 0.05 |
| | 2320.80 m–2322.37 m | 2 | B-5 | 45° | 0.01 | | B-6 | 0.02 | | B-7 | 0.04 | | B-8 | 0.05 |
| | 2320.80 m–2322.37 m | 2 | B-9 | 90° | 0.01 | | B-10 | 0.02 | | B-11 | 0.04 | | B-12 | 0.05 |
| | 2408.08 m–2412.48 m | 3 | C-1 | / | 0.01 | | C-2 | 0.02 | | C-3 | 0.04 | | C-4 | 0.05 |
| | 2504.10 m–2505.91 m | 4 | D-1 | / | 0.01 | | D-2 | 0.02 | | D-3 | 0.04 | | D-4 | 0.05 |
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