WATERTIGHT SCREEN AND SCREEN MANUFACTURING METHOD Russian patent published in 2015 - IPC E02B3/16 

FIELD: construction.

SUBSTANCE: invention refers to hydrotechnical construction and can be applied in waterproofing of irrigation channels. Watertight screen includes extended polymer panels laid overlapping on a prepared base and interconnected by 1.0-2.0 mm thick geomembrane band to form deformation fold. Before placement in channel beds, extended panels are made of flexible sheets out of polyolefin waste in the form of polymer sheets of 15-20 mm thickness, 1.5 m width and 15-20 m length. Flexible sheets are connected to form 10.0-11.5 m wide panels of the length equal to a channel perimeter. Geomembrane is made of polyolefin waste. Panels feature installation holes. Waterproofing element is attached to the slopes by metal anchors with sealing washers, hammered into ground through installation holes. Complete water tightness and hydraulic efficiency of channel bed is achieved. Due to significant thickness of waterproofing element, and deformation folds available, the waterproofing screen is highly reliable.

EFFECT: prevented water loss by penetration from irrigation channels, prevented swamping, salinisation and flooding of valuable agricultural lands, and thus improvement of meliorative and ecological situation in irrigated lands.

6 cl, 5 dwg