Fig. 7
The variation of averaged shear stress of the rock bridge A (\( \tau _{{{\text{xy}}}}^{{\text{A}}} \)) and B (\( \tau _{{{\text{xy}}}}^{{\text{B}}} \)), as well as AE characteristics (normalised AE events and cumulative AE energy), with loading displacements. \( \tau _{{{\text{xy}}}}^{{\text{A}}} \)–displacement, \( \tau _{{{\text{xy}}}}^{{\text{B}}} \)–displacement, normalised AE events, and normalised cumulative AE energy are represented by red curves, blue curves, grey lines, and shaded regions, respectively.
