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

<div>Consecutive stages of the blast-induced cracking process under high in situ stress (<i>K</i><sub><i>d</i></sub> = 2.0, <i>σ</i> = 30 MPa): (a) crushed zone; (b) crushed zone, nonlinear fracture zone, and radial crack propagation zone; (c) extension of the crushed zone, nonlinear fracture zone, and radial crack propagation zone; (d) crack pattern by blanking damaged elements.</div>

Advances in Civil Engineering

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Figure 7

Figure 7: Study of the Rock Crack Propagation Induced by Blasting with a Decoupled Charge under High In Situ Stress 