METHOD OF CONSTRUCTION OF COMBINED WATER INTAKE Russian patent published in 2024 - IPC E02B9/04 E02B8/02 E03B3/36 

FIELD: reclamation systems and structures.

SUBSTANCE: invention relates to the field of reclamation systems and structures and can be used in the implementation of water intake for the needs of irrigation of land from mountainous and foothill sections of rivers, which are characterized by high water flow rates and the presence of a large number of suspended and bottom sediments. The method of constructing a water intake includes a water intake channel 1 of variable cross-section connecting the beginning and end of the bend of the river 2. Water intake galleries 3 are built into the bottom of the channel. Water is supplied from the intake galleries 3 to the storage pool. Above the gallery 3, a metal fine-mesh grid 12 is fixed in a closed contour from above to the side walls of the gallery 3. In this case, the fine-mesh grid 12 is used for laying on top of it, at least two layers, and fixing in the longitudinal and transverse direction of the permeable geotextile material 10 and 11, the edges of each layer of which are bent up along the contour of the rectangular gallery 3 from above. Each end of the layer of the web of geotextile material is tightly fixed with thin strips in the form of a metal frame 13 using fasteners. Gallery 3 is divided into two unequal parts in height and in its middle part, below the fine-mesh lattice 12, an inclined horizontal dividing wall 14 with a window 15 at the end towards the rear wall of the gallery 3 is fixed rigidly in plan. The slope of the dividing wall 14 in relation to the bottom of the gallery 3 is made in the opposite direction of the movement of water along the length of the gallery 3. Water accumulates in a large volume from above the inclined wall 14, then it drains by gravity with a large drain flow through the window 15 of the wall 14, hitting the back wall of the gallery 3, creates a single continuous high-speed mode of water flow, falling into the lower part of the gallery 3 under the inclined wall 14 cleaned of debris and sediment, receiving clean water and its high-speed mode, while washing away all adhering biogenic pollutants of water from the walls and bottom of the gallery 3, then by gravity through the pipeline 16 is fed into the storage pool 4, from which it is delivered by a mobile pumping station 6 of the SNP type under pressure into the discharge pipeline 7 to irrigated areas or for use for drinking water supply of small pumping stations or individual enterprises.

EFFECT: technical result is an increase in the reliability of the water intake, simplification of the operation of filter elements laid and fixed with the possibility of quick-detachable connection of layers of permeable geotextile material, as well as an increase in the efficiency of the water jet exiting through the coated filter cloths of geotextile material and a fine-mesh grid towards the fixed inclined wall 14 dividing the gallery 3 into two unequal parts, with filling from above with a large flow and draining it towards the window 15 of the wall 14, where, hitting the back wall of the gallery 3, the flow develops a high-speed mode towards the flowing gallery 3, which will not only expand the functionality of the intake combined design, but also to increase productivity during the intake of clean water, and also ensure the safety of its operation with an uninterrupted supply of water, cleaned from debris and sediment.

1 cl, 4 dwg