Peev A. Research and development of regular-style designs of extended charges with the regulation of dynamic influence on the borehole ground part

Object: processes of destruction of rocks by explosion. The purpose: increase of efficiency of explosive destruction of rocks boreholes the charges, achievable due to management of wave processes in a ground part of a chink. Methods: are based on substantive provisions of the theory of elasticity, mathematical physics, mathematical statistics. Experimental researches include methods of physical modelling and statement of experiment. The equipment: high-speed camera VSK-5, piezoceramic gauges of pressure, an oscillograph S 8-14. Theoretical and practical results: optimum parameters of the concentrator of shock waves are proved, available at the bottom of a chink at which amplification of dynamic loading by the reflected shock waves of environment in a ground part of a chink is reached and dynamic influence of the reflected waves on a material of padding is simultaneously reduced; parameters of a spatial arrangement in a ground part of a chink of the insurgents displaced concerning its axis at which increase of efficiency of explosive destruction of environment is reached are designed. Novelty: law of distribution of normal pressure in the environment in a zone subgrade drilling is established depending on parameters of axial displacement of insurgents in a ground part of a charge; dependence dynamic influence environments by shock waves from parameters of the concentrator of shock waves is established. Results are introduced at joint-stock company "Poltava Mining", Krukiv's career. A scope: open-cast mining of minerals.