A 3D numerical model was presented to investigate the blast-induced damage characteristics of highly stressed rock mass. The RHT (Riedel, Hiermaier, and Thoma) in LS-DYNA used simulate its parameters were calibrated by a physical test. Based on model, influences confining pressure free surface span investigated. results show that under uniaxial loading, crater volume increases with increases. s...

Abstract Blasting performance is influenced by mechanical and structural properties of the rock, on one side, blast design parameters other. This paper describes a new methodology to assess rock mass quality from drill-monitoring data guide blasting in open pit operations. Principal component analysis has been used combine measurement while drilling (MWD) information two drill rigs; corrections...