Comminution is the size reduction of rock particles from blasting during mining stage to crushing and milling mineral processing [...]

A review of breakage and fragmentation modelling literature has shown that only a few methodologies have been specifically developed for applications in underground production blasting. These approaches however, have applied empirical relations that do not adequately consider ring blasting geometries; have failed to appropriately respond to changes in basic design input parameters; and have pro...

Underwater rock-plug blasting is a special technique for excavating underwater inlets. In the process of excavation, blasting-block movement from difference in water pressure inside and outside tunnel one key factors successful construction. Laboratory experiments were conducted using small explosive charges, high-speed camera was adopted to observe study block motion. Then, numerical simulatio...

The geological effects of rock blasting in silt-rock strata are complex, and the vibrations caused by threaten safety inhabitable areas. Based on measured data for at site dynamic finite element simulations, propagation characteristics were studied. surface, vertical vibration velocities from surface to tunnel, attenuation along tunnel’s axis analyzed. results this study as followings: directio...