Fractal Characteristics and Acoustic Emission during the Failure Process of Argillaceous Siltstone with Different Moisture Contents

Figure 7

(a~d) AE source location and spatial evolution of rock sample U7-2 at different loading stages. (e~h) Physical images corresponding to the AE source location at different loading stages.

(a) Compaction stage

(b) Elastic stage

(c) Plastic stage

(d) Failure stage

(e)

(f)

(g)

(h)