Shcherban V. Raising efficiency of destruction of mountain rocks by convertion explosive materials

Dissertation work is devoted to development of downhole charges from convertion explosive materials, providing the effective mechanism of destruction of rock sectional massifs, for the receipt of high-quality mountain mass on the careers of building materials of Ukraine. It is set on the basis of the analytical researches represented in work, that detonation in convertion explosive materials flows on the mechanism of hot points. Action of shock impulse formed by convertion explosive materials on the process of destruction of mountain -rock in the area of broken destructions is appraised. It is offered for small-sectional massifs to use for forming of downhole charges compositions, consisting of pyroxylin and ballistite powders with maintenance of pyropowder not below 50 % and bulk density no less than 0,75 г/см3. For large-sectional massifs maximal efficiency is achieved at application of composition from ballistite powders and blasting explosives with maintenance of blasting explosives within thelimits of 30-35 % or monolithic charges from ballistite hard rocket fuel. It is offered to reduce a sensitivity to mechanical actions by the use of superficial phlegmatization by water and water-oil compositions. The industrial tests of the chosen compounding are conducted on the careers of building materials.