METHOD OF DESTRUCTION OF ICE COVER Russian patent published in 1998 - IPC

FIELD: blasting operations breaking down ice cover of water reservoirs. SUBSTANCE: two charges of same power as minimum are put on one vertical line under ice near reflecting object at distance multiple of length of bending-gravitational wave. Charges are blasted in turn with time interval equal to period of bending-gravitational wave. Length and period of this wave depend on thickness and strength of ice, depth of water reservoir and power of charge. Dependencies for their calculation are given in description of invention. Invention makes it feasible to use energy of reflected waves and to enhance efficiency of blasting operations for destruction of ice cover close to engineering structure or shore. EFFECT: enhanced efficiency of blasting operations. 1 dwg