RU1783062C - Hydraulic system for preventing water reservoir against silting - Google Patents

Abstract

The invention relates to the operation of hydraulic structures, in particular to devices preventing the reservoir from silting. In order to increase the efficiency of protection of the reservoir from silting and to save water consumption when discharging suspended sediment into the downstream in the river channel, a jumper 4 is installed in the mine and a concrete settler 6 is made in the mine, while the section of the tunnel from the lower tail of the reservoir to the settler 6 is made inclined, and the sump 6 has two chambers 8 and 10 1 s p file, 2 il

Description

The invention relates to the operation of hydraulic structures, in particular to the issue of preventing the reservoir from silting.

The purpose of the invention is to increase the effectiveness of protecting the reservoir from silting and saving water consumption when discharging suspended sediment into the downstream.

In Fig.1 shows a longitudinal profile of the hydraulic system in the downstream of the river with a water intake, in Fig.2 - the same, with a sump in cross section.

The system has a reservoir 1, made in the riverbed. At the end of the reservoir, dam 2 is located, with a water intake 3. A jumper 4 is installed in the riverbed with the possibility of overflow through it. The jumper is installed either at the extreme point of the backwater corresponding to the maximum level of the reservoir or at such a distance ot the reservoir,

in order to ensure that the tunnel 5 is sufficiently inclined to erect a concrete settler 6 in the mine working. The settler is built in the mining at the end of the tunnel adjacent to the water intake. The tunnel is made through with access to the downstream and is equipped with control panels 7 at the beginning at the jumper. The section of the tunnel from the beginning of the sump to the downstream is inclined, which contributes to the development of the flow rate necessary for continuous rolling of large and small suspended sediments. The sump has two chambers. The first chamber 8 is made in the direction of the flow of water into the tunnel and is equipped with a discharge pipe 9 at the top with an outlet to the reservoir. The chamber is tightly closed from above and separated from the second chamber 10 by a partition 11, the bottom of which has an opening 12. for water to enter.

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a brush 13, through which a stream of water with suspended sediment flows, and from the bottom towards the downstream a discharge pipe 14 is made. It is equipped with a shutter 15, which regulates the sanitary passage of water transporting suspended sediment.

The work is carried out as follows.

A continuous stream of water with suspended sediment of coarse and fine fractions from the river channel is directed by a jumper into the tunnel. The control panels are open at this time. From the inclined section of the tunnel, the surface of which coincides with the surface of the sump, water passing through the closed surface of the chamber 8 passes through the grating 13 and enters the chamber 10. At the same time, large objects (logs, boulders, stones, etc.) continuously roll along the inclined grating in lower pool, and smaller suspended sediments, falling into the chamber, under their t gesture fall to the bottom. On settled dissolving suspended solids (clay, soil) through the opening 12 enter the first chamber and through the discharge pipe 9 go into the reservoir. At the same time, the speed of water through the opening into chamber 8 is lower than the speed of precipitated suspended sediment, which allows entrainment of small and medium suspended sediments together with larger sediments and is carried out continuously by a sanitary discharge of water controlled by a shutter into the lower tail of the river channel towards the sea Purified Mutiev water with dissolved (clay, ground) suspended sediment discharged into the reservoir from chamber 8 is immediately taken by a nearby water intake and discharged into the sea. Non-trapped particles flow through the reservoir. When the water intake is switched off, suspended sediment of a larger fraction settles along the dam, creating an anti-filtration protection.

Using the proposed hydraulic system provides effective protection of reservoirs from silting

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by continuous high-quality purification of incoming water from suspended sediment in a sump constructed in a mine tunnel. At the same time, the use of the proposed system provides a saving in water consumption, because the latter is maximally used in the reservoir for electricity generation, with the exception of sanitary waste, which in all

Claims (2)

10 conditions are necessary. And yet, the continuous supply of suspended sediment into the lower pool of the river channel towards the sea, contributes to the preservation of the fallow strip, and as a consequence of this, the preservation of the local and tunneling populations of ichthyofauna. SUMMARY OF THE INVENTION 1. A hydraulic system for preventing a reservoir from silting, including a reservoir made 20 in the riverbed, a dam with a water intake, made at the end of the reservoir, and an inclined tunnel with access to the lower pool and equipped with shields in its initial part, characterized in that, in order to 25 increase the efficiency of protection of the reservoir from silting and save water consumption at discharge of suspended sediment into the downstream, a lintel is installed in the river channel near the reservoir with the possibility of 30 the religion through it, and in the mine working at the end of the tunnel, a concrete settler was made, while the section of the tunnel from the lower pool of the reservoir to the settler was inclined, and the settler had two kz35 measures communicating with each other under the partition separating them, the first chamber, made in the direction of flow in the tunnel, the top is closed tightly, and the second is equipped 40 with a rigidly fixed grating, in addition, both chambers are provided with outlet pipes, and a control shutter is installed on the outlet pipe provided with a chamber grate. 45 2. The system according to claim 1, characterized in that the sump is made in the area of the reservoir adjacent to the water intake. J 2 MJ3J1A h / 4 # p S t FIG. 2