EARTH-FILLED DAM BUILT ON PERMAFROST GROUND Russian patent published in 2005 - IPC

FIELD: hydraulic engineering, particularly for building dams in northern climatic zones.

SUBSTANCE: dam comprises upstream and downstream fills, crest, impervious member and transition layers located adjacent to the member. Dam has heat shield arranged between impervious member and the nearest intermediate layer and made as a row of successively formed wells. Wells are provided with at least one heating device. Depth, number of wells and pitch of the wells, as well as heating device parameters are chosen to subject impervious member and the nearest intermediate layer separated with heat shield to positive temperatures created by the heat shield. Electric heater or liquid heat-transfer medium may be used as the heating device.

EFFECT: increased dam operation reliability and safety.

3 cl, 2 dwg