Application & analysis of hole by hole blasting technology in Guangxin Qingzhou Quarry

There are some big issues using current blasting method in Guangxin Qingzhou cement quarry,including blast vibration,fragmentation and power consumption in crushing process.Introduced high precision detonator to achieve hole by hole initiation way,and upgrade current initiation system.Used 3-D laser scan to optimize blasting design,controlled minimum burden and isochron inside blasting area.Through side by side comparison,conducted vibration monitoring,collected and analysed lots of test data,fully confirmed the technical advantage of hole by hole technology using in cement quarry.Compared with plain detonators,blasting vibration reduced by 40%;fragmentation more equality and oversize rate lower;digging rate increased around 15%,and reduced invalid waiting time of truck;power consumption decreased by 5%.