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

<div>Crack formation diagram under different PBH shapes and different delay time. (a) The PBH is a round hole. (b) The PBH is a notch hole.</div>

Shock and Vibration

Figure 15: Numerical Simulation Research of Smooth Wall Blasting Using the Timing Sequence Control Method under Different Primary Blast Hole Shapes 