RESERVE SPILLWAY OF EARTH DAM Russian patent published in 2013 - IPC E02B7/06 

FIELD: construction.

SUBSTANCE: reserve spillway of an earth dam represents an artificial outlet of trapezoidal section arranged in a dam crest, with depth to the elevation of the rated level of water overflow, in the bed of which there is a protective coating from a polymer material in the form of a geomembrane fixed in sumps at the side of the upper reach and on the edges of slopes with tightening weights. On the bottom slope of the dam along the width of the artificial outlet there is a conveyance tray that changes into a deflector part of the spillway. The bottom of the conveyance and deflector parts is made of a double cloth of the geomembrane with non-matching holes designed for free discharge of the filtration flow. Walls of the conveyance tray and the deflector part and dampers of energy of the water flow are shaped from flexible shells filled with sand. The double cloth of the geomembrane is fixed to the protective coating of the artificial outlet with arrangement of a welding seam.

EFFECT: invention provides for safe passing of emergency high water preventing damage of a dam and flooding of below territory, to avoid environmental and material damage.

2 cl, 5 dwg