Study of the Rock Crack Propagation Induced by Blasting with a Decoupled Charge under High In Situ Stress

Figure 1

Consecutive stages in the cracking process of rock blasting [7]: (a) crushing zone; (b) crushing and fracture in the nonlinear zone; (c) radial cracks from an elastic wave; (d) expansion of cavity, extension of nonlinear crushed zone, and growth of radial fractures.

(a)

(b)

(c)

(d)