Influence of Rock Strength on the Propagation of Slotted Cartridge Blasting-Induced Directional Cracks

<div>The initiation and propagation of the directional crack in the granite: (a) <i>t</i> = 1.89; (b) <i>t</i> = 6; (c) <i>t</i> = 60; (d) <i>t</i> = 300.</div>

Advances in Civil Engineering

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Figure 5

Figure 5: Influence of Rock Strength on the Propagation of Slotted Cartridge Blasting-Induced Directional Cracks 