An anti-silting water intake facility with automatic flood control and sewage discharge

Abstract

The invention discloses an anti-silting water intake facility for automatic flood control and sewage discharge, which comprises a sand washing slope, an overflow dam, a sump and a grit chamber, the sand washing slope is arranged between connecting mountains, and the sand washing The left side of the slope is a flood control dam, and the right side is an overflow dam. A sand turning spout is set between the sand washing slope and the flood control dam, and a sump is set in the flow direction of the sand washing slope. An overflow slope is set parallel to the sand flushing slope. The right side of the sump is an overflow dam, and the left side leads to the filter residue bed. The filter residue bed is provided with an overflow groove along the direction of water flow. A dam is arranged at the front end of the launder, and the overflow tank is connected to a grit chamber, and the grit chamber is provided with a water intake gate and a sand discharge gate. The invention fundamentally solves the problems of water intake for hydropower stations in mountainous rivers, water plants, and farmland irrigation, and realizes the purpose of never silting and blocking water intake dams during flood periods and natural water intake during dry seasons.

Description

technical field [0001] The invention belongs to the technical field of rivers, and in particular relates to an anti-silting water intake facility for automatic flood control and sewage discharge. Background technique [0002] Generally, in the dry season of mountains and rivers, the flow rate is small, the water flow is clear, and the sand content is low. Except for the leaves and other floating objects caused by strong winds, the water intake process of the dam is simple. Times or even hundreds of times the torrent in the dry season, the torrent is mixed with a large amount of floating objects, and the sediment and pebbles are poured down. Under such circumstances, it is very difficult for the power station and the waterworks to obtain the water they use normally and safely. up. [0003] At present, the water intake dams commonly used in mountainous rivers are: overflow dams with sand discharge from the front and water intake from the side. The disadvantage of this kind o...

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Problems solved by technology

[0002] Generally, in the dry season of mountains and rivers, the flow rate is small, the water flow is clear, and the sand content is low. Except for the leaves and other floating objects caused by strong winds, the water intake process of the dam is simple. Times or even hundreds of times the torrent in the dry season, the torrent is mixed with a large amount of floating objects, and the sediment and pebbles are poured down. Under such circumstances, it is very difficult for the power station and the waterworks to obtain the water they use normally and safely. up

[0003] At present, the water intake dams commonly used in mountainous rivers are: overflow dams with sand discharge from the front and water intake from the side. The disadvantage of this kind of water intake dam is that the height of the overflow dam will be as high as the silt and pebbles. If the sand discharge gate is not lifted in time when the flood comes, the water inlet will be blocked by a large amount of silt, pebbles and floating objects. Both manual adjustment and sand discharge are required

[0004] Another kind of intake dam is the bottom fence intake dam. Generally, when the flood is discharged, the surface layer of the flood is floating objects, the middle layer is turbid water, and the bottom layer is silt and pebbles. The bottom fence intake dam just takes a large amount of sediment. Large-capacity grit chambers are difficult to dispose of these sediments, and mountainous rivers are narrow and it is difficult to find places where large-capacity grit chambers can be built. Secondly, the pressure of floods makes the bottom fence very attractive, and a large number of branches Weeds are also easy to block the fence, so that the used flow of water cannot be obtained. In addition, the bottom fence is arranged on the main river channel. When the flood comes, due to the large flood flow, once the bottom fence is blocked, it will not be possible to carry out manual work. Cleaning up, so power station, waterworks, farmland irrigation water intake in mountainous rivers has always been a subject worthy of study

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