Sensitivity analysis on blast design parameters to improve bench blasting outcomes using the Taguchi method

Abstract In surface mines, bench blasting is a typical way of excavating hard rock mass. Although significant development has taken place in explosive technology but still only part the energy used to excavate and large proportion wasted away creates number nuisances. Backbreak, massive fragmentation, high-intensity ground vibration are all symptoms improper blasting. As result, production costs increase significantly while productivity decreases. The outcomes affected by variety factors, which may be classified into three categories: properties, blast geometry. Consequently, it necessary examine effect these parameters on So, this study, sensitivity analysis been performed various design using Taguchi method study influence vibration, backbreak, fragmentation. A total 32 experiments have designed numerical modeling was also carried out, LS DYNA software simulate results. It found that hole diameter most important factor influencing outcomes. However, rows affects backbreak almost slightly more than diameter, vibrations surrounding damage strongly depend diameter. Furthermore, geometry compared properties. both properties play role backbreaking.