Experimental Study on Mechanical Properties and Acoustic Emission Characteristics of Water Bearing Sandstone under Stable Cyclic Loading and Unloading

Figure 9

Deformation and acoustic emission characteristics of C-70-1 sample. (a) The curves of ringing count and axial strain of C-70-1 sample with time. (b) The curves of cumulative ringing count and axial strain of C-70-1 sample with time. (c) The curves of energy and axial strain of C-70-1 sample with time. (d) The curves of cumulative energy and axial strain of C-70-1 sample with time.

(a)

(b)

(c)

(d)