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

<div>Stress concentrate curve of elements of TBH hole wall before TBH initiation when delay time is 1 ms. (a) The PBH is a round hole. (b) The PBH is a notch hole.</div>

Shock and Vibration

fig16

Figure 16

Figure 16: Numerical Simulation Research of Smooth Wall Blasting Using the Timing Sequence Control Method under Different Primary Blast Hole Shapes 