UNIT OF GROUND DAM COUPLING WITH CONCRETE STRUCTURE Russian patent published in 2011 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: unit of a ground dam coupling to a concrete structure includes a connecting abutment. The surface of the connecting abutment in the area of the ground dam adjacency is coated with a polymer-containing layer with an open-pore surface facing the ground dam. The surface of the connecting abutment at least within the limits of possible freezing is coated with a geomembrane. The geomembrane is made of polyethylene, is arranged between the polymer-containing layer and the connecting abutment, and is fixed to the connecting abutment. A collecting channel is arranged near a bottom face of the water-retention part of the ground dam. The channel is formed in the cross section with a semi-pipe made of polyethylene, which is tightly fixed to the geomembrane with the possibility to receive water that filters along the coupling unit and to send this water specifically outside the limits of the ground dam.

EFFECT: higher filtration strength of the ground dam coupling unit with the concrete structure due to reduced possibility of crack formation in the area of the coupling unit, prevention of ground material washing with water moving directly along contact of coupling, and provision of control of this water amount.

7 cl, 4 dwg