Numerical Simulation Analysis on Rock Breaking Effect by Shaped Charge Blasting Technology

Shaped charge blasting technology in rock drivage could ease the imbalance of excavation replacement, raise the mine productivity, and help speedy drivage of rock drift. Based on ANSYS-LS-DYNA, we established plane stress model of common blasting model and shaped charge blasting model, simulated the blasting process of them, and analyzed the effect of rock breaking effect, obtained propagation law of detonation wave, and analyze the mechanism of shaped charge blasting. Compared with conventional blasting, the analysis results showed that the ability of energy-gathering of shaped charge blasting is increased by more than 75%, the ability of rock-cutting is increased by almost 85%, in the meantime, shaped charge blasting accelerates the speed of dynamite blast, which increases about 75%, and then ensure the integrity of the surrounding rock.