Effect of Initiation Location within Blasthole on Blast Vibration Field and Its Mechanism

<div>Comparison of <b>PPV</b>s measured below the blasthole bottom (#1∼#3) in the single-hole blasting experiment. <b>PPV</b>s induced by blastholes (a) with shock wave-reflecting block and (b) without shock wave-reflecting block.</div>

Shock and Vibration

fig21

Figure 21

Figure 21: Effect of Initiation Location within Blasthole on Blast Vibration Field and Its Mechanism 