WATER ENGINEERING SYSTEM ON PERMAFROST SOILS Russian patent published in 2011 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: water engineering system on permafrost soils comprises a ground dam that creates a water reservoir in the water course and is equipped with an antifiltration device and a freezing system, and an open spillway arranged between dead parts of the ground dam. The antifiltration device comprises a screen and an upstream apron made with a watertight geomembrane from polymer material. The underlying layer of the upstream apron is made of low-watertight local soils of a seasonal thawing layer and/or quarried soils. Cooling elements of the freezing system are arranged in soils of the ground dam downstream shell above the upper border of permafrost soils and provide for freezing of seasonal melting layer soils and bed talik of the watercourse in the specified area. The open spillway is arranged in the form of a gabion structure, which is enclosed at the bottom and at the sides into a watertight geomembrane of polymer material, which, within the limits of the spillway head part is coupled with the geomembrane of the screen in a watertight manner to the level of the upper edge of the screen at the area of the ground dam.

EFFECT: invention makes it possible to save funds when erecting the water engineering system, to improve its reliability and repairability.

11 cl, 10 dwg