SU47605A1 - Water intake facility - Google Patents

Description

The invention relates to water intake structures, mainly irrigation systems designed to supply water to two sides of the river, and consists in the fact that in the extreme parts of the dam there are galleries serving as continuation of the water channels and having regulators located near the central dismounted part of the dam where there is a half-tray, which is intended to direct the upper layer of water into the regulators and under which are bottom bottom flushing holes blocked by gates.

The distinctive features of the structure are aimed at concentrating bilateral water abstraction in one place, avoiding the installation of dams that are so costly adjusting structures, ensuring the irrigation network from harmful large sediment littering it, and reducing the front structure.

In FIG. 1 schematically depicts the structure being described in longitudinal section (according to AB in FIG. 2); FIG. 2 is the same in terms of; FIG. 3 and 4 shows a section along the CD and EF in FIG. 1 (on a larger scale).

In the extreme deaf weir parts of the dam there are galleries 7 with a corresponding bias; The galleries communicate with the channels / 2 and have regulators b located at the dismountable part 2 of the dam. Razborchata part 2 consists of spans covered by flat shields 5; The shields are located on the lower side of the half-pitcher taking water from 4, which is located between the gobies 5 approximately at a height of 1.0 l from the JO flutebet and expands from the center of the structure to the regulators 6. The vertical wall 7 of the half-tray is made of collapsible Shandor. The controllers 6 are overlapped with flat shields 8. The half-pole 4 coupling to the gallery takes place by means of a differential. A bridge 9 is provided for the maintenance of the facility, on which the lifts are located. The dam was mated with the banks by means of abutments 7 /, from which open channel 72 runs in an embankment with a fortified riding wet face J3 raised to a mark exceeding the maximum calculated catastrophic flood horizon by 0.20-0.30 m.

The work of the facility is as follows. At the time of the flood passage, the shields 3 of the dismountable part 2 are open; the spans of 7 water intake pails 4 are reduced to a minimum for the possibility of passing the flood over the water intake half pail; the openings of the regulator 6 are open in accordance with the required flow of irrigation; The weir parts of the dam allow a part of the flow not to pass through dismountable part 2.

At the time of the outflow of low-flow rates, the boards 3 of the dismounted part 2 of the pltines are covered so as to ensure the water intake to the regulators 6.

Drainage deaf parts of the dam have a ridge above the half-tray edge 4, which ensures at any time the possibility of drawing water to the regulators b, mainly during low days, and also concentrates the passage of the main flow through the dismountable part 2.

One of the features of the operation of the facility is that the flow does not have significant approach speeds along the coast. Here it is possible only to fall sediment drawn by the flow. In the central part of the dam, on the contrary, there is some deepening of the channel due to the flow rate concentrated through the dismountable part. The flow in the dismountable part is divided by a half-roll into two layers in the horizontal direction; from the upper clarified water intake occurs to the regulators b, while the lower layer, saturated with Nanos, is passed under the trough. into the lower pool.

During runoff costs that carry little sediment, the shields 3 can be lowered without the fear that sediment will begin to flow into the regulators.

The described structure can be used for water intake from the mountain rivers.

 The subject matter of the invention.

Claims (3)

1. A water intake structure designed to supply water to two sides of the river, characterized in that, in order to concentrate water intake in one place, in the extreme parts of the dam, galleries / with regulators b located at the central dismantling section are made the parts of the dam where the semi-tray 4 is installed, which is intended to direct the upper water layer to the regulators 6 and under which the bottom flushing holes are located, which are blocked by the closures. 2. The form of construction according to claim 1, characterized in that the half-tray is made expanding from the middle to the regulators b. 3. The form of construction on PP. 1 and 2, characterized in that the vertical wall 7 of the half-tray is made dismountable of shandors, shields, etc.