Figure 6

The curves for the AE released energy of the rock sample with the two sets of cross-persistent joints (0°/30°): (a) AE released energy vs. stress-time curve; (b) AE released energy vs. strain–time curve.

The curves for the AE released energy of the rock sample with the two sets of cross-persistent joints (0°/30°): (a) AE released energy vs. stress-time curve; (b) AE released energy vs. strain–time curve.