Study of Post-Peak Strain Softening Mechanical Behaviour of Rock Material Based on Hoek–Brown Criterion

Table 2

Rock strength parameters at the peak position and at the starting residual stage.

Confining pressure (MPa)	At the peak			At the starting point of the residual stage
	(10^−3)			(10^−3)
2	5.5	1.99	0.46	6.3	0.29	0.01	48.00
5	6.5	1.65	0.50	8.0	0.49	0.04	13.09
8	7.7	1.42	0.93	9.0	0.98	0.33	4.06
12	8.8	1.09	0.99	10.0	0.70	0.38	2.87
18	12.3	0.77	1.25	13.0	0.48	0.47	—