Energy Evolution Characteristics and Distribution Laws of Rock Materials under Triaxial Cyclic Loading and Unloading Compression

Table 2

Rock characteristic energy densities in different confining pressure conditions.

σ3 (MPa)	(MJ/mm^3)	(MJ/mm^3)	(MJ/mm^3)
0	0.1043	0.0000	0.0212
5	0.2483	0.0782	0.1243
10	0.3641	0.1096	0.1965
15	0.4466	0.1281	0.2082
20	0.5129	0.1295	0.2153
25	0.5941	0.1391	0.2261
30	0.6527	0.1405	0.2610