METHOD TO ERECT UNDERFLOW FILTERING WATER INTAKE OF COMBINED DESIGN Russian patent published in 2014 - IPC E02B9/04 

FIELD: construction.

SUBSTANCE: invention relates to hydraulic engineering, namely, to water intake facilities erected for water intake in areas of rivers with complicated hydrological conditions. A pit is mined for a water collecting gallery 1, as well as a trench for a tubular water intake 7. The water collecting gallery 1 is erected from solid concrete or reinforced concrete, and then the tubular water intake 7 is erected. On top of the water collecting gallery 1 they install a filtering water intake comprising a metal grid 2. On top of the metal grid 2 they lay flexible mats 2 in two rows, made of light fascines wrapped into a geonet. At the same time the first row 4 of mats 3 is laid above the metal grid 2 in direction of the longitudinal axis of the gallery 1, and the second row 5 - across the gallery 1 and in direction of the river flow, and also with the inclination that is more than the inclination of the river bed. The additional tubular water intake 7 is arranged in front of the water collecting gallery 1 under the river bed at one side and in direction of the river flow. The tubular water intake 7 is made of perforated pipes 8 and flexible mats 3 laid around them. The mouth part of the tubular water intake 7 with inclination enters the gallery 1 at the level of water level.

EFFECT: invention provides for higher reliability of operation of an underflow water intake under conditions of mountain, foothill and plain areas of rivers.

2 cl, 5 dwg