METHOD TO WEAKEN MONOLITH OF RIVER ICE COVER AND DEVICE FOR ITS REALISATION Russian patent published in 2012 - IPC E02B15/02 

FIELD: construction.

SUBSTANCE: method consists in installation of modules in an ice cover by means of their placement prior to river freezing, with subsequent freezing-in of modules into ice as the river freezes. Besides, the module dome is installed above the water surface, and the lower end of the module is below the level of the expected ice cover. The module is filled with air via an air duct attached to a tight dome of a module, at the open mechanical valve, afterwards the valve is closed. At the same time, whenever a lane is produced under influence of climatic factors, by opening the mechanical valve, air is released from the module with filling of its cavity with water from lower layers. The method is realised by means of a module comprising a vessel installed on bottom supports with arrangement of its ends outside the borders of the ice monolith, and a tight dome. An air duct with a mechanical valve is connected to a dome. The module is arranged in the form of a nozzle with a downward expansion.

EFFECT: efficient weakening of river ice cover monolith and development of conditions for free discharge and passage of thawed waters.

1 dwg