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

<div>Stress concentration curve of elements of TBH hole wall before TBH initiation when the delay time is 3 ms. (a) The PBH is a round hole. (b) The PBH is a notch hole.</div>

Shock and Vibration

fig17

Figure 17

Figure 17: Numerical Simulation Research of Smooth Wall Blasting Using the Timing Sequence Control Method under Different Primary Blast Hole Shapes 