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Dam spillway structure and construction method thereof

A technology for spillways and dams, applied in the field of spillways, can solve problems such as low energy dissipation rate, insufficient flow aeration, and cavitation damage on stepped surfaces.

Active Publication Date: 2021-01-29
广东粤源工程咨询有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, engineering practice has shown that with the increase of flow single width and discharge, due to the increase of water depth at the bottom surface of the spillway, the initial cross-section of aeration moves downward, resulting in insufficient flow aeration, and the step surface of the spillway is prone to cavitation damage, resulting in low energy dissipation rate
[0004] For the related technologies mentioned above, the inventor believes that there is a defect of low energy dissipation rate

Method used

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  • Dam spillway structure and construction method thereof
  • Dam spillway structure and construction method thereof
  • Dam spillway structure and construction method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046]Referencefigure 1 , A dam spillway structure, including an obliquely extending road body bottom plate 1, a first side plate 2 and a second side plate 3 formed on the inclined surface of the road body bottom plate 1, and a plurality of A stepped body 4, an inflating mechanism 5 installed on the upper part of the second side plate 3.

[0047]Referencefigure 1 , The bottom plate 1 of the channel body is inclined, the higher end of the bottom plate 1 of the channel body is the inlet 11, and the end of the lower horizontal position is the outlet 12, and the water flows from the inlet 11 along the bottom 1 of the channel body to the outlet 12; Both the first side plate 2 and the second side plate 3 form the upper part of the bottom plate 1 of the channel body. Both the first side plate 2 and the second side plate 3 extend vertically, and the first side plate 2 and the second side plate 3 are spaced apart Set up.

[0048]Referencefigure 1 , The stepped body 4 is equidistantly arranged alon...

Embodiment 2

[0071]ReferenceFigure 4 ,Figure 5 The difference between Embodiment 2 and Embodiment 1 is that the inflation mechanism 5 includes a rotating member 51 and an inflator 6. The specific structure of the rotating member 51 is the same as that of the rotating member 51 in the first embodiment.

[0072]ReferenceFigure 5 , The inflatable body 6 includes a mounting plate 61, a blade 62, a housing 63, and a round tube 64. The mounting plate 61 is fixedly sleeved on the rotating rod 513; the blade 62 is fixedly connected to the outer side wall of the mounting plate 61 away from the second side plate 3, the blade 62 is rotationally symmetrical along the axis of the rotating rod 513; the housing 63 is sleeved on the mounting plate The outside of the plate 61 and the blade 62, the housing 63 is a cylinder with a hollow inside, the axis of the housing 63 coincides with the axis of the rotating rod 513, and the outer side wall of the housing 63 is fixedly connected to the second side plate 3. On the ...

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Abstract

The invention relates to a dam spillway structure and a construction method thereof. The dam spillway structure comprises an obliquely-arranged spillway body bottom plate, a first side plate and a second side plate, wherein the first side plate and the second side plate are formed on the upper end face of the spillway body bottom plate; one end of the spillway body bottom plate is provided with aninlet, and the other end of the spillway body bottom plate is provided with an outlet; the spillway body bottom plate inclines downwards from the inlet to the outlet; a plurality of step bodies are arranged at the upper part of the spillway body bottom plate in the drainage direction; each step body comprises a flat surface and a vertical surface; a vent groove is formed in each vertical surface;each vent groove extends in the extending direction of the corresponding step body; one end of each vent groove penetrates through the second side plate; and gas is introduced into each vent groove.The dam spillway structure has the effect of improving the energy dissipation rate of a spillway.

Description

Technical field[0001]This application relates to the field of spillway, and in particular to a dam spillway structure and construction method thereof.Background technique[0002]At present, the spillway is the flood control equipment and discharge structure of water conservancy buildings such as reservoirs. It is mostly built on the side of the dam. The spillway is generally infrequent, but it is an important building in the reservoir hub. The spillway is like a large tank, used to release floods that cannot be accommodated by the planned storage capacity. When the water level in the reservoir exceeds the safe limit, water flows downstream from the spillway to prevent the dam from being destroyed. Therefore, the importance of the spillway to the dam is self-evident. However, the spillway of the dam is directly exposed to the atmosphere and subjected to the influence of the natural environment, and its foundation is prone to typical seepage erosion damage. This kind of seepage erosion ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/06
CPCE02B8/06
Inventor 戴跃华李威余列强梁娟李燕邓美姣
Owner 广东粤源工程咨询有限公司
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