Eco-friendly subsidiary dam capable of improving gas supersaturation

A friendly, Erdao dam technology, applied in traditional hydropower energy, hydroelectric power stations, marine engineering, etc., can solve the problems of limited application, limited scope and degree of influence of river water bodies, and small size, so as to increase power generation. , Social benefits are significant, the effect of increasing economic benefits

Active Publication Date: 2013-01-02
CHINA THREE GORGES CORPORATION
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Problems solved by technology

However, due to its simple structure, light weight, small volume, and limited scope and degree of influence on the water body of the river, it is mainly suitable for small and medium-sized rivers, but the design idea of ​​the device itself limits its application in large-scale water conservancy and hydropower projects. application

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  • Eco-friendly subsidiary dam capable of improving gas supersaturation

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Embodiment 1

[0019] This embodiment provides an eco-friendly Erdao Dam that improves gas supersaturation, with a structure such as figure 1 As shown, including the dam body 1, the downstream surface of the dam body 1 is the overflow surface 2, and the overflow control gate 3 is set on the dam item to control the outflow flow on the overflow surface, so that the maximum water depth of the overflow surface does not exceed 5m; the overflow section at the top of overflow surface 2 is a WES curve, and the slope of the straight section of overflow surface 2 is 1:1.5~1:2.

[0020] The end of the overflow surface of the dam body 1 is provided with a sill, and the sill of the dam body 1 adopts a continuous type, which guides the water flow passing the dam to the downstream surface, and the water flow passing the dam is smoothly connected with the downstream water flow, so that the gas supersaturated water body is located in the downstream channel In the upper layer, the angle to accelerate the esca...

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Abstract

The invention relates to an eco-friendly subsidiary dam capable of improving gas supersaturation generated during flood discharge and energy dissipation of large-sized hydraulic and hydroelectric engineering, comprising a dam body. The downstream face of the dam body is an overflow surface, a gate is arranged on a dam crest to control the outflow rate on the overflow surface so that the maximal water depth of the outflow of the overflow surface does not exceed 5m; a backward step of the dam body adopts the continuous type, and meanwhile, the flow over spillway is smoothly connected with the downstream water flow, so that the gas supersaturation water body is positioned at the upper layer of a downstream river course to accelerate the escape speed of the gas supersaturation water body; and the inner part of the dam body is provided with a penstock to guide the water in a water cushion pool to the lower reaches. The eco-friendly subsidiary dam capable of improving gas supersaturation can reduce water saturation when water passes through a low-head water turbine, reduces the supersaturation of the water of the downstream river course, and effectively controls the influence of gas supersaturation caused by flood discharge of the dam on the aquatic organism of the lower reaches.

Description

technical field [0001] The invention relates to a novel hydraulic structure, in particular to an eco-friendly secondary dam which can improve the problem of gas oversaturation caused by flood discharge and energy dissipation in large-scale water conservancy and hydropower projects. Background technique [0002] Today, the construction of water conservancy and hydropower projects has gradually changed from technical capital constraints to environmental constraints. How to reduce the impact on the ecological environment while ensuring the benefits of water conservancy and hydropower projects has become an important issue that engineering units, river basin management departments, and energy agencies urgently need to solve. question. Among the impacts of water conservancy and hydropower projects on the ecological environment, the downstream gas supersaturation phenomenon caused by flood discharge and energy dissipation of dams is a prominent water environment problem. The high...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B9/00E02B7/00E02B8/06
CPCY02E10/22Y02E10/20
Inventor 戴会超刘伟蒋定国别玉静毛劲乔
Owner CHINA THREE GORGES CORPORATION
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