Discrete Element Modeling of Crack Initiation Stress of Marble Based on Griffith’s Strength Theory

Table 4

and of rocks under different confining pressures.

Confining pressure (MPa)	0	1	5	10	20	30	40	50
(MPa)	72	76.7	96	114.3	143	166	184	201.4
(MPa)	24.9	28.1	38.65	51.3	67.55	85.25	94	101.8
	0.35	0.37	0.4	0.45	0.47	0.51	0.51	0.51