Experiment Study on Blasting Cone of Coal

With the similar materials of coal and the blending ratio relationships of four groups obtained from the blending experiments of the similar materials, bas ed on the coal model established with the blending ratio for the blasting cone experiment, the analysis was conducted on the blasting cone radius, the visible blasted Co ne depth, the blasting volume, the blasting cone parameters and other experiment data.With the same explosive dosage and depth, the general coal would have the mo re easy blasting than the rock body (No. I group) .With the different explosive dosage and depth, the feature curve and relationship formula of the coal body blasting co ne was obtained.The optimized depths of No.1- 4 group blasting would be 0.092 m, 0.096 m, 0.094 m, 0.100 m individually.The experiment results could be references to the research on coal body blasting role and the rational selection of the coal body blasting parameters.