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

Figure 3

Failure envelopes fitted by proposed parabola criterion for transversely isotropic rocks. (a) Dry phyllite [35], (b) dry orthoquartzite [35], (c) dry slate [35], (d) chlorite schist [36], and (e) biotite schist [36].

(a)

(b)

(c)

(d)

(e)