Dam intake

 

(57) Abstract:

The invention relates to hydraulic engineering and is intended for water in the Piedmont and mountain sections of rivers. Dam water contains water-intake device channel, the washing device for flushing sediment sediment circulating threshold, regulatory spur, pocket water intake device, formed by a spur of the receiving device and the shore of the river before the water intake device, and the river at the water intake device. The washing device is made at the end of the pocket to the receiving device and provided with a spur parallel to the river for water-intake device. Berm spur of the water intake device is made at the level level of water in the pocket at the maximum design flow channel during low-water period expenses river. Berm spurs washing device is made at the top level of the recipient device. The invention provides a decrease in the amount of sediment entering the channel to the receiving device. 1 Il.

The invention relates to the field of hydraulic engineering, namely water intake structures on the foothill and mountain areas of the rivers.

Known dam water containing in is nnow spur, pocket water intake device, formed by a spur of the diversion structure and the shore of the river, and fastening the shore at the water intake device /1/.

The disadvantage of this dam intake is the increase in bottom and suspended sediment supplied to the receiving device, with the increase of water in the river and a simultaneous increase in their deposits for proryvnym device, deteriorating the quality of his work.

The task for the decision of the invention is to reduce the inflow of sediment into the pocket of the receiving device while increasing the efficiency of flushing their deposits for proryvnym device.

The aim of the invention is to increase the reliability of the water intake device by reducing the amount of sediment flowing into its channel.

This goal is achieved by the fact that the dam water containing water-intake device channel, the washing device for flushing sediment sediment circulating threshold, regulatory spur, pocket water intake device, formed by a spur of the receiving device and the shore of the river before the water intake device, and verstraete, equipped with a spur parallel to the river for water intake device, and berm spur of the water intake device is made at the level level of water in the pocket at the maximum design flow channel during low-water period expenditure of the river, and berm spurs washing device is made at the top level of the recipient device.

The technical result is ensured by the overflow of the upper layers of water in the pocket of the receiving device through the berm his spurs with increasing water flow in the river. The level of water in the pocket increases, reducing the ingress of water saturated sediments through the input section of the pocket, and through the washing device is reset clarified water with high nanotransporters capacity that erosion of previously deposited sediments. At the same time this site does not come silt-Laden water from the river below the area of the water intake device.

The drawing shows the dam water intake.

Dam water intake on the river 1 consists of a water intake device 2 to channel 3, the washing device 4 with the circulation threshold 5, regulation spurs 6, pocket 7 to the receiving device the Rega 10 river at the water intake device 2, spurs 11 washing device 4, and a spur 8 is a berm 12 and spur 11 - berm 13.

Dam intake works as follows.

Fence maximum design flow of the receiving device 2 at low costs rivers 1 provides regulatory spur 6 and the spur 8 to the receiving device 2, creating a pocket 7 to the receiving device 2 horizon to ensure the delivery of design water flow rate to the receiving device 2 and channel 3. Placement of berm 12 spurs 8 to the receiving device 2 at the level level of water in the pocket 7 to the receiving device 2 prevents the loss of water from the pocket 7 to the receiving device 2 at low levels of water in the river 1.

With increasing water flow in the river 1 begins sediment transport and their admission into the pocket 7 to the receiving device 2, where they settle for the circulation threshold of 5 and are carried away in the lower reach dam intake opening holes washing device 4, partially settling on the way due to the reduction of the flow velocity when flowing over proryvnym device 4.

With further increases in water flow in the river 1 below regulatory spurs 6, the water level becomes higher berniem consumption, taken away from a river 1. Simultaneously with the reduction of the flow in the inlet section of the pocket 7 is reduced, the amount of inflowing sediment. On the other hand through the spur 8 is poured clarified water, and increasing the capacity of the leaching device 4 increases the flow velocity at the approach to circulation threshold of 5, increasing the transport of the trapped sediment. At the same time decreases their concentration, because through spur 8 shimmer top most pure water layers of the river 1.

Reduced sediment loads in the water discharged through the washing device 4 enables its transport between the coast 10 and the spur 11 washing device 4, which also contributes to increased water velocity for proryvnym device 4, since it is determined by the water level in the river 1 at the end of the spurs 11 washing device 4, and not at the beginning in the area of its contiguity to promiseme device 4.

To prevent overflow of water from the river 1 through the berm 13 spurs 11 washing device 4 suits on the top level of the water intake device defined reliable operation of the dam water intake until the flood of settlement security.

Sources INF,, Fig. 11.5 (prototype).

Dam water containing water-intake device channel, the washing device for flushing sediment sediment circulating threshold, regulatory spur, pocket water intake device, formed by a spur of the receiving device and the shore of the river before the water intake device, the shore of the river at the water intake device, characterized in that the washing device is made at the end of the pocket to the receiving device and provided with a spur parallel to the shore for the receiving device, and the berm spur of the water intake device is made at the level level of water in the pocket at the maximum design flow channel during low-water period expenditure of the river, and berm spurs washing device is made at the top level of the recipient device.

 

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SUBSTANCE: method involves supplying water stream free of young fish in waterway; forming hydraulic screen near water-intake influence area to separate above area from main stream of water-intake structure; forming whirlpool area near water-intake shore edge. Water stream is formed upstream water-intake structure. Water for users is taken from whirlpool area formed by inner water spray boundary and shore edge. Facility includes water-intake structure arranged at shore line, water-intake pipes connected with pump, stream former and means for water stream creation in waterway. Means for water stream creation is made as channel operating in non-pressure regime and having outlet part arranged upstream water inlet. Marks formed on channel bottom and waterway bottom coincide one with another. Stream former is located downstream water intake and directed in downstream direction.

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FIELD: hydraulic engineering.

SUBSTANCE: invention relates to hydraulic works designed for preventing getting of young fish into diversion facilities. Proposed device contains fish retaining shield made in form of hollow guides arranged in tiers across water channels in depth with displacement of each upper tier towards diversion channel. It contains also perforated air duct located on bottom of water channel directly before said shield and train-and-fish trough arranged in upper part of channel in parallel with air duct and connected with outlet and device to let out young fish arranged in height of fish retaining shield. Guides of U-shaped are installed at angle to current of intake channel, their planes are perforated and open end part is pointed to bottom of water channel. Young fish let out device is made in form of perforated shields installed side guides for vertical displacement by drive in height of fish retaining shield relative to additional guides made from side of bank edges of intake channel. Perforation holes of shields and u-shaped guides do not coincide in light.

EFFECT: possibility of retaining and bringing young fish out of limits of influence of diversion facility.

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EFFECT: provision of retaining and removing of young fish over entire depth of water channel.

3 cl, 7 dwg

FIELD: hydraulic engineering.

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7 cl, 7 dwg

FIELD: hydraulic engineering.

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2 dwg

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