DEVICE TO OPEN ICE COVER Russian patent published in 2011 - IPC F42D3/00 E02B15/02 

FIELD: explosives.

SUBSTANCE: device comprises an explosive charge installed under an ice cover and a blasting system. The explosive charge is equipped with a floating chamber of a streamlined shape filled with gas or other material, density of which is below water density. The device is arranged with the possibility of its fixation between the ice cover and the explosive charge at the distance L defined according to the formula. The explosive charge is connected to a float chamber via a mechanical element, which ensures increasing the distance between them in a working position. The explosive charge surface facing the float chamber is made of a convex shape. The float chamber is equipped with a unit of engagement to ice. The float chamber volume is selected based on conditions.

EFFECT: invention makes it possible to increase efficiency of ice cover damage, to clean destruction area from ice pieces with a directed explosion of the explosive charge.

5 cl, 1 dwg