A Parabolic Failure Criterion for Transversely Isotropic Rock: Modification and Verification

Table 3

Fitting results of the parameters in (18) for predicting .

Sample
Dry phyllite	0.89109	-0.0962	4	-7.10	0.92
Dry orthoquartzite	0.9519	-0.0490	5	1.59	0.88
Dry slate	1.2550	0.3872	1	45.10	0.83
Chlorite schist	0.9643	-0.0988	4	16.79	0.97
Biotite schist	0.9992	-0.0244	7	-10.00	0.89