Discussion on Application of Slope Pre-splitting Blasting Technology in Open-pit Mine under Complex Geological Conditions
Due to the the limitations of geographical environment and geological conditions of the boundary slope,it is not possible to arrange the main blasting holes,buffer holes,and pre-splitting holes under normal conditions,and the blasting area is located at the interface of different rock layers.Therefore,it is not possible to arrange and charge the holes according to the normal pre-splitting blasting scheme,which puts higher requirements on the design and construction quality of the pre-splitting blasting hole network parameters and explosive load.Through multiple pre-splitting blasting practices at the mining site,the control variable method is used to optimize the parameters of hole network,and adjust the structure of explosive charging and blasting network,etc.,and a good slope control and blasting effect is finally obtained.