Experimental Study on Initial Damage Point of Deep Granite under Step Cyclic Loading Method

Table 3

Testing data of preliminary cyclic loading tests.

Testing no.	Confining pressure (MPa)	Axial loading (MPa)	Percentage of σP (%)
G-10-C1	10	65	20
G-10-C2	10	131	40
G-20-C1	20	80	20
G-20-C2	20	160	40
G-30-C1	30	92	20
G-30-C2	30	184	40