METHOD OF WATERBED HYDRAULIC BLOW AND DEVICE TO THIS END Russian patent published in 2013 - IPC E02B3/02 E02B8/02 

FIELD: process engineering.

SUBSTANCE: proposed method comprises washout of sediments by water jets to carry fine fractions over by flow and strengthening waterway bottom by coarse fractions forming riprap. Velocities of washout and carryover sediments in continuous blow with stream are created by in-channel basin displacing in blow. Said in-channel basin is formed by device acting as water-retaining construction of variable geometry. Proposed method is implemented using the device composed of horizontal web with ballast arranged thereon connected with pressure web by ropes to make water passage there between and provided with balloons secured along said passage on said web and adjusted by filler. Opening of said passage is adjusted by moving web. The latter is secured by stabilising rings to ropes, pressure web and directly to balloon and horizontal web by ropes via said guide rings. Device displacement in blow direction id effected by varying balloon filler volume. Said balloon has inner rope diaphragm tightening it above central part and is installed on horizontal web at the point of fastening to control rope guys locating the device on waterway bed.

EFFECT: higher efficiency of washout.

4 cl, 8 dwg