METHOD FOR RIVER ICE COVER BREAKING AND DEVICE FOR ITS IMPLEMENTATION Russian patent published in 2014 - IPC E02B15/02 F42D3/00 

FIELD: transport.

SUBSTANCE: method for river ice cover breaking includes insertion of explosive gas mixture in elastic gas-tight shell under ice cover and subsequent initiation of explosion in this gas mixture. Using ballast weight the shell is imparted zero buoyancy, submerged to specified depth and released downstream upon which the ballast weight is removed at the predetermined place, and gas mixture explosion is initiated with delay sufficient to rise elastic shell to bottom edge of ice cover. Device for method implementation comprises elastic gas-tight shell filled with explosive gas mixture, ballast weight and gas mixture explosion initiator. Elastic gas-tight shell is made in the form of hollow toroid in the bottom part of which ballast weight is uniformly spaced along circumference. Herewith, the elastic shell is provided with mechanism for removing ballast weight.

EFFECT: invention permits to increase efficiency of gas explosion for ice cover breaking and to decrease material and time consumption.

5 cl, 3 dwg