Mechanical Properties and Failure Modes of Rock Specimens with Specific Joint Geometries in Triaxial Unloading Compressive Test

Table 2

Stress state for the triaxial compression and unloading compression.

Stress state	Minimum principal stress, σ3 (MPa)	Maximum principal stress, σ1 (MPa)	Remarks
	10	61.526	Triaxial compression
	8	55.468	Triaxial compression
	6	47.028	Triaxial compression
	4	37.239	Triaxial compression
	2	29.256	Triaxial compression
	10	43.106	Triaxial unloading compression
	8	38.677	Triaxial unloading compression
	6	32.110	Triaxial unloading compression
	4	25.502	Triaxial unloading compression
	2	20.060	Triaxial unloading compression