Measurement and Analysis of Blasting Vibration in Jinduicheng South Open-pit Mine

The deep-hole bench blasting method was used in production blasting in south of Jinduicheng molybdenum open-pit mine.With the mining depth increasing,the Dongchuan River tunnel became closer to the blast area.In order to ensure the tunnel safe enough in the production process,the TC-4850 blasting vibration meter was used to monitor the blasting vibration in south of Jinduicheng open-pit mine.By regression analysis of monitored data,the empirical formula of attenuation law in the propagation of blasting seismic wave was figured out,which fitted the condition of south open-pit mine well.Meanwhile,the factor induced blast vibration was analyzed and the corresponding measures of reducing vibration were put forward.