ABSTRACT

When a fully coupled explosive is initiated in the blast hole, the shock wave generated in the blast hole subsequently impacts the blasthole wall and propagates through surrounding rock. The propagation, reflection, and interaction of this shock wave result in crushing, spalling, and fragmentation of the surrounding rock. The energy conversion process of blasting pressure transformed to rock fragmentations, vibrations, and energy losses depends on explosive and rock properties. In order to realistically predict the effect of the blasting pressure on rock fragmentations and vibrations, the blasting pressure has to be modeled accurately and realistically.