Research Article
Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method
Table 4
Program of ascending step cyclic loading tests.
| Testing no. | Confining pressure (MPa) | Initial axial loading (MPa) | Ascending axial loading (MPa) | Value | Pct. | Value | Pct. | Value | Pct. | Value | Pct. (%) |
| G-10-X1 | 10 | 131 | 40 | 137 | 42 | 144 | 44 | 151 | 46 | G-20-X1 | 20 | 160 | 40 | 169 | 42 | 177 | 44 | 185 | 46 | G-30-X1 | 30 | 184 | 40 | 193 | 42 | 203 | 44 | 212 | 46 |
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