Ponomarev A. Development of protecting resources blasted breaking technology for non-ore mining minerals using explosives ANFO type

Blasted breaking of non-ore minerals. To develop protecting resources mining technology using fore hole charges of new explosives ANFO type. Methods of research are the methods of mathematical physics, physical modeling and investigating high-speed processes using equipment for measure tensions and time intervals. The relationship crushed zone radius versus explosive(s properties and refractive index on explosive-rock boundary was established. For the first time the principle for valuation of blasting small-sized fractions output by area under head part of explosive impulse was substantiated. The prescription of new physically stable explosives ANFO type was developed. Their adoption made it possible to reduce blasting costs, amount of dust and toxic fumes in quarry atmosphere, to increase commodity output and to receive economic effect 542 thousand grn. Sphere of use is mining industry.