The influence of detonation interval on the dynamic response of underground fortification

Abstract It is of great theoretical significance and engineering application to investigate the influence detonation interval on dynamic response underground fortification under blasting loading. First, a numerical simulation blast loading carried out based continuum-discontinuum element method. Then, displacement characteristic analyzed. Finally, fracture The results indicate that increasing trend at top boundary gradually decays with increase interval. final value left first increases then decreases With in interval, proportion concrete undergoing shear top, left, right decreases.