A dam that can discharge drift and sand to prevent sedimentation

Abstract

The invention discloses a dam capable of discharging floatage and silt and preventing siltation. The dam comprises a dam body. Power plants are arranged on the outer side of the dam body. The dam body comprises side dam bodies and an overflow dam body. The side dam bodies are disposed on the two sides of the overflow dam body; the side dam bodies and the overflow dam body are in an V shape; the power plants are disposed on the outer sides of the side dam bodies; a flood and silt discharging hole is formed in the lower portion of the overflow dam body and communicates with the inner side and the outer side of the overflow dam body; and the flood and silt discharging hole is provided with a gate system for controlling opening or closing of the hole. The two side dam bodies and the overflow dam body are in an V shape, and the flood and silt discharging hole is formed in the lower portion of the overflow dam body; the floatage, the silt, pebbles and the like are gathered in the middle of a reservoir through the backlashing function of the inner side surfaces of the side dam bodies on water fluid; and by means of reservoir area slope and reservoir capacity elevation overflow, the flood and silt discharging hole is opened so that suspended substances and bed load of a reservoir area can be discharged out of the flood and silt discharging hole, and the floatage can be discharged out of an overflow hole. By means of the dam, the reservoir area capacity and the water quality are guaranteed, and the purpose of floatage and silt discharging of reservoir area dynamic water flow is achieved.

Description

technical field [0001] The invention belongs to the technical field of water conservancy and environmental protection, and in particular relates to a dam which is simple in structure and convenient to use and can discharge drift, sand and prevent sedimentation. Background technique [0002] The reservoir dams built on rivers now, including gravity dams, Gong dams, Shiche dams, earth-rock dams, etc., are all straight dams that block water in front to form reservoir storage capacity. This kind of dam is controlled by "blocking" The water violates the law of the natural flow of river water. Although water energy is used, the backwash and backflow phenomenon produces a large amount of sediment, pebbles, and floating objects. They reduce the capacity of the reservoir year by year, and the floating objects are spent. A lot of money and labor to clean it up. Therefore, the use of this commonly used dam body will cause many difficult problems to be solved. It is of great practical ...

AI Technical Summary

Problems solved by technology

[0002] The reservoir dams built on rivers now, including gravity dams, Gong dams, Shiche dams, earth-rock dams, etc., are all straight dams that block water in front to form reservoir storage capacity. This kind of dam is controlled by "blocking" The water violates the law of the natural flow of river water. Although water energy is used, the backwash and backflow phenomenon produces a large amount of sediment, pebbles, and floating objects. They reduce the capacity of the reservoir year by year, and the floating objects are spent. A lot of money and labor to clean up

Therefore, the use of this commonly used dam body will cause many difficult problems to solve. It is of great practical significance to develop a dam that can discharge drift, sand and prevent sedimentation.

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