Research Article
Experimental Study on Triaxial Unloading Failure of Deep Composite Coal-Rock
Table 3
Different confining pressure unloading test results.
| | Sample number | Height (mm) | Diameter (mm) | Confining pressure (MPa) | Fracture load (kN) | Compressive strength (MPa) |
| | 4# | 101.240 | 49.540 | 10.000 | 87.696 | 45.497 | | 5# | 101.040 | 49.380 | 15.000 | 120.882 | 63.120 | | 6# | 101.840 | 49.820 | 20.000 | 154.718 | 79.368 |
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