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Arc-shaped labyrinth weir with downstream dropping slope chute

A labyrinth and arc-shaped technology, applied in barrage/weir, water conservancy projects, sea area projects, etc., can solve the problem of reduced discharge capacity, achieve the effect of improving discharge capacity, increasing discharge capacity, and increasing flow coefficient

Inactive Publication Date: 2012-07-18
POWERCHINA XIBEI ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide an arc-shaped labyrinth weir with a downstream drop-type steep slope discharge chute to solve the defect in the prior art that the discharge capacity is reduced due to the submerged flow state in the downstream

Method used

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  • Arc-shaped labyrinth weir with downstream dropping slope chute
  • Arc-shaped labyrinth weir with downstream dropping slope chute
  • Arc-shaped labyrinth weir with downstream dropping slope chute

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Embodiment Construction

[0019] An arc-shaped labyrinth weir with a downstream drop type steep slope chute, comprising an upstream diversion channel 1, a labyrinth weir bottom plate 3, and a labyrinth weir downstream chute 4 sequentially connected along the water flow direction, the labyrinth weir bottom plate 3 is an arc-shaped labyrinth weir, and the arc-shaped labyrinth weir There are dams protruding obliquely along the water flow direction at both ends of the weir, and the dams at both ends of the arc-shaped labyrinth weir are in the shape of an outer splayed. There is an arc-shaped labyrinth weir weir body 2 on the top surface of the labyrinth weir bottom plate 3, and the arc-shaped labyrinth weir weir body 2 is formed from the labyrinth. The weir bottom plate 3 is arc-shaped and folded from one end to the other end. The initial floor elevation of the downstream chute 4 is lower than the elevation of the upstream diversion channel 1, forming a drop h. The floor elevations on both sides of the dow...

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Abstract

The invention relates to a labyrinth weir, in particular to an arc-shaped labyrinth weir with a downstream dropping slope chute. The arc-shaped labyrinth weir provided by the invention comprises an upstream approach channel, a labyrinth weir bottom plate and a labyrinth weir downstream chute connected in a water flow direction; the labyrinth weir bottom plate is an arc-shaped labyrinth weir; dams slantly extend out from two ends of the arc-shaped labyrinth weir in the water flow direction; and the dams at the two ends of the arc-shaped labyrinth weir are V-shaped. The arc-shaped labyrinth weir provided by the invention is characterized in that an arc-shaped labyrinth weir body is arranged on the top face of the labyrinth wire bottom plate and is folded in an arc shape from one end of the arc-shaped labyrinth weir bottom plate to the other end of the arc-shaped labyrinth weir bottom plate. With the adoption of the arc-shaped labyrinth weir provided by the invention, the disadvantage that the discharge capacity is reduced due to the submerged flow state at the downstream in the prior art is avoided.

Description

technical field [0001] The invention relates to a labyrinth weir, in particular to an arc-shaped labyrinth weir with a downstream drop type steep slope discharge chute. Background technique [0002] Labyrinth weirs can be widely used in reservoir projects, spillway projects or spillway reconstruction projects, as low-head backwater structures, and are characterized by a large comprehensive flow coefficient. In March 1986, it was first used in the reconstruction project of Guanjiaba (Hongweiba) in Guangde County, Anhui Province, my country. Since then, dozens of labyrinth weirs have been built in Shandong, Jiangxi, Zhejiang, Yunnan and other provinces. [0003] The above-mentioned labyrinth weir is applied to the wide-crested weir. Its working principle can be understood as that the thin-walled weir body is periodically bent and arranged within the total width of the spillway. flow. At the International Conference on Large Dams held in Lausanne, Switzerland in 1985, it was...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B7/16E02B8/06
CPCY02A10/30
Inventor 王君利任苇魏坚政陆希
Owner POWERCHINA XIBEI ENG
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