Influence of Open Channel on Explosion-Induced Vibration Wave Propagation

Abstract

Hazard control of explosion-induced vibration is an important issue which cannot be ignored in blasting engineering. Its influence range and damage scale are affected by the shock wave energy. This study applied the LS-DYNA software and adopted the Arbitrary Lagrangian-Eulerian method for numerical analysis to simulate the propagation of blast waves caused by the surface blast of C-4 explosives in a semi-infinite space in order to explore the effectiveness of Open Channel Grooves in vibration isolation. The analysis shows that the finite element method can properly simulate the dynamic characteristics of soil in an explosion; with the distance moving away from the explosion point, the shock wave gradually decays. Open Channel Grooves have a significant effect on attenuating the propagation of detonation waves. The attenuation degree is related to the width and depth of the groove, and the impact of the depth is greater than that of the width. This study can be used as a reference in hazard control of explosion-induced vibration for relevant engineering projects.