Energy dissipation structure for water conservancy and hydropower engineering

Abstract

The invention aims to provide an energy dissipation structure for water conservancy and hydropower engineering. The energy dissipation structure involves a drainage port formed in the upper portion ofa dam and a flip ramp arranged on one side of the dam; the upper end of the flip ramp is connected with the drainage port, and the lower end of the flip ramp obliquely extends downwards and tilts upwards along an arc at the end part; a buffer device is arranged at the tail end of the flip ramp, and a hydraulic jump area is arranged between the buffer device and the flip ramp; the end face, facingthe flip ramp, of the buffer device is provided with a plurality of continuous flowing channels arranged from top to bottom; and a water outlet communicating with all the continuous flowing channelsis formed in the end surface, back on to the flip ramp, of the buffer device. The downwards-poured water flow is upwards flipped into the air through the flip ramp, and part of kinetic energy of the water flow is dissipated through the air; and when the water flow passes through the hydraulic jump area from the air, the diffusion phenomenon can be generated, so that the water flow can enter the continuous flowing channels with different heights, the contact area between the continuous flowing channels and the water flow is increased, and energy dissipation is conducted on the water flow through friction force.

Description

technical field [0001] The invention relates to the technical field of water conservancy and hydropower projects, in particular to an energy dissipation structure for water conservancy and hydropower projects. Background technique [0002] With the gradual development of hydropower resources in mountainous rivers in my country, the development of my country's hydropower engineering construction has entered a climax stage, especially in the western mountainous areas where a large number of small and medium hydropower stations have been built. The water flow in natural rivers is generally a slow flow, and the single-width flow distribution along the river width is relatively uniform. However, when drainage structures such as dams and sluices are built in the river, the flow conditions of the river have undergone tremendous changes, and the flow velocity and energy of the discharged water are large, which has a great destructive effect on the riverbed downstream of the drainage...

AI Technical Summary

Problems solved by technology

[0004] The above existing technical solutions have the following defects: the structures such as stone piers, steps and retaining columns will be continuously worn under the long-term erosion of water flow, so that the energy dissipation effect will gradually weaken

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