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

Figure 11

Crack development with blast hole diameter 42 mm. (a) t = 80 μs, (b) t = 120 μs. (c) t = 300 μs, (d) t = 600 μs.

(a)

(b)

(c)

(d)