Mengku open iron ore blasting crater test and its application

Based on a series of blasting crater test results on Mengku iron ore mining platform and stripping platform(single hole blasting crater concentrake kits,variable pitch with blasting explosives funnel and continuous incline bence blasting cylindrical funnel),the optimal depth ratio,explosive consumption,hole spacting and hole rows are obtained.According to the livingston elastic strain equation,the deep-hole of ore blasting parameters and rock of siding-slope smooth blasting parameters are sloved.Industrial tests on the blasting parameters show that the deep hole blasting qulity is significantly improved;smoth blasting in controlling the apperance of rock slope and reducing damage of rock is fitted with the quality requirements.