TUBULAR DRAIN Russian patent published in 2010 - IPC E02B11/00 

FIELD: construction.

SUBSTANCE: invention relates to hydraulic construction and may be used as drainage facility of earth dykes and flood walls. Drain consists of perforated drained pipes, receiving and draining parts. Receiving part is made of flexible mats laid around drained pipes and made of net shells and draining filler, which is arranged from tight rows of light rolls wrapped into geonet and laid normally in direction of filtration flow. Around drained pipes at the distance of mats length there are additionally stiffening rings arranged with height of rib equal to thickness of water-receiving part, and along its circumference along its whole area there is a gabion net tightened with fixation to stiffening rings. Draining part is made of similar mats, but they are arranged at a certain distance from each other in direction of filtration flow and with inclination from drained pipes to foot of lower slope. Light rolls of mats are made of dry matured cane.

EFFECT: invention reduces labour intensiveness of drainage manufacturing and increases efficiency of its operation.

5 dwg