Siltation-preventing water intake facility achieving automatic flood prevention and pollution discharge

Abstract

The invention discloses a siltation-preventing water intake facility achieving automatic flood prevention and pollution discharge. The siltation-preventing water intake facility comprises a sand flushing slope, an overflow dam, a water collection groove and a setting basin. The sand flushing slope is arranged between connected mountains. A flood-preventing dam is arranged on the left side of the sand flushing slope, the overflow dam is arranged on the right side of the sand flushing slope, a sand turning nozzle is arranged between the sand flushing slope and the flood-preventing dam, the water collection groove is formed in the sand flushing slope in the water flow direction and matched with the sand flushing slope in a bearing mode, an overflow slope is arranged in the direction, parallel to the sand flushing slope, of the water collection groove, the right side of the water collection groove is provided with the overflow dam, the left side of the water collection groove is led to a residue filter bed, the residue filter bed is provided with an overflow groove in the water flow direction and matched with the overflow groove in a bearing mode, a water stop dam is arranged at the front end of the overflow groove, the overflow groove is connected with the setting basin, and the setting basin is provided with a water intake gate and a sand discharge gate. The water intake problems of a mountain river hydropower station, a tap water plant and farm irrigation are fundamentally solved, and the purposes that siltation and blockage are never caused on a water intake dam in the flood period, and natural water intake is achieved in the drought period are achieved.

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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