Tverda O. Improving the blasting technology in vertically layered arrays of rock in quarries

Ph.D. thesis is devoted to the improvement of blasting technology in vertically layered arrays of rock in quarries using established patterns of properties and structural and textural features of rocks impact on the blasting parameters. The patterns of change of radius of crater of destruction along the length of the charge was obtained. The dependence for the anisotropy factor determining by the energy flux density of the explosion and the dependence of finished and unfinished areas of destruction on values overlap of craters formed by the action of the four charges for rectangular and displaced network location were obtained. The dependences of well network sizes on averaged radius of the crater of destruction, anisotropy factor, orientation of general fracture systems taking into account the efficiency of working off the ledge were found. Selection of rational types of explosives using complex coefficient of efficiency wich includes technical, economic and environmental components was improved. The blasting technology for different types of rocks within a block that is exploded, with the establishment of reasonable network well sizes and switching circuits for variable directions of general fracture systems received the further development.