Study on the Damage Model of Coal Rock Caused by Hydraulic Pressure and Electrical Impulse in Borehole

Figure 8

Data processing diagram at 11 kV voltage and different hydrostatic pressures.

(a) 1 MPa CT image

(b) 1 MPa binary image

(c) 4 MPa CT image

(d) 4 MPa binary image

(e) 6 MPa CT image

(f) 6 MPa binary image

(g) 8 MPa CT image

(h) 8 MPa binary image