Study on Dynamic Evolution Law of Blasting Cracks in Elliptical Bipolar Linear Shaped Charge Blasting

Figure 12

Crack development with different blast hole diameters. (a) D = 50 mm, (b) D = 60 mm, (c) D = 70 mm, (d) D = 80 mm, (e) D = 90 mm, (f) D = 100 mm.

(a)

(b)

(c)

(d)

(e)

(f)