Experimental Investigations on Electrical Charge of Precracked Rock Specimens under Uniaxial Compression

Figure 4

Variation of stress and instantaneous charge quantity as a function of time and failure characteristics of precracked samples with different inclination angles. (a) Sample 1. (b) Sample 2. (c) Sample 3. (d) Sample 4. (e) Sample 5.

(a)

(b)

(c)

(d)

(e)