Numerical Simulation Research of Smooth Wall Blasting Using the Timing Sequence Control Method under Different Primary Blast Hole Shapes

<div>Cracks formation diagram under different blast hole spacing when PBH is a notch hole. (a) <i>H</i> = 50 cm. (b) <i>H</i> = 60 cm. (c) <i>H</i> = 70 cm. (d) <i>H</i> = 80 cm. (e) <i>H</i> = 90 cm. (f) <i>H</i> = 100 cm. (g) <i>H</i> = 110 cm. (h) <i>H</i> = 120 cm.</div>

Shock and Vibration

fig19

Figure 19

Figure 19: Numerical Simulation Research of Smooth Wall Blasting Using the Timing Sequence Control Method under Different Primary Blast Hole Shapes 