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

<div>Theoretical calculation results: (a) crack lengths under various in situ stresses; (b) crack length-time curves at <i>K</i><sub><i>d</i></sub> = 2.0 (<i>K</i><sub><i>d</i></sub> is the decoupling coefficient, which is defined as the ratio of the borehole diameter to explosive diameter).</div>

Advances in Civil Engineering

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Figure 3

Figure 3: Study of the Rock Crack Propagation Induced by Blasting with a Decoupled Charge under High In Situ Stress 