Analysis of Bench Blasting in Open Pit Iron Mine

The bench blasting is a very important step in the daily produce of open pit iron mine.Adjusting the blasting parameters and improving the balsting method,which used to reduce the cost and improve the blasting effect,are the main methods of the blasting optimization at different geological conditions.According to practical results,the blasting parameters of different rocks on the suitable geological condition can adjust to relatively reduce the numbers of the hole and to promote the productivity with simplifying work,and the millisecond time and detonation orientation are selected to control the peak value of the superposition of two hole blasting stress.