Study on numerical simulation of bench blasting and its elevation amplification effect

摘要

In order to research the elevation amplification effect of blasting vibrational velocity of bench Blasting, Using FEM program of LS-DYNA, based on the simplified blasthole theory, established the single blasthole Φ 140mm finite element model,draw elevation amplification is not unlimited magnified, but first increasing with elevation to certain extreme value, and then reducing along with the elevation.