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Double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow

A technology of double-sided vertical slits and fish passages, which is applied in water conservancy projects, climate change adaptation, marine engineering, etc., can solve the problems of replenishing and destroying upstream nutrient fishery resources, destroying the appearance of rivers, and blocking migratory fish channels. Achieve good energy dissipation effect, obvious energy dissipation effect, and maintain the effect of integrity

Inactive Publication Date: 2016-08-31
HOHAI UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the increasing demand of human beings for water resources, while the construction of barrage facilities on natural rivers benefits mankind, it also destroys the original appearance of rivers. The original rivers are suitable for the reproduction and growth of local fish. Due to the impact of water conservancy projects on The change of water flow state leads to the blockage of the passage of migrating fish in the river, and also causes the destruction of the original channel for the downward transport of upstream nutrients and the supplement of fish fry in the upstream spawning area to the downstream fishery resources.

Method used

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  • Double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow
  • Double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow
  • Double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow

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Embodiment 1

[0025] Embodiment 1: On the structure of the vertical seam fishway described in the present invention, four stepped vertical seam partitions are selected, compared with the existing double-sided vertical seam fishway, and the positive passages are given respectively. Flow velocity distribution under water and reverse water flow, wherein the flow velocity measuring points are respectively set between the vertical slit type partition and the pier column, which is the maximum position where the flow velocity occurs. The positions selected by some technologies are the same, and the flow velocity is compared on the basis of this project. It can be seen from Table 1 and Table 2 that the vertical joints No. 1 to No. 4 are under the conditions of forward flow and reverse flow, the present invention and the prior art Compared with the fish-passing facility that can reduce the water flow velocity, improve the water flow pattern, and enable fish to go up smoothly.

[0026]

[0027] ...

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Abstract

The present invention discloses a double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow, and is characterized in that the double-side vertical slot type fishway comprises a fishway body, a plurality of pier columns and a plurality of vertical slot type separator plates; the pier columns are disposed over sidewalls of the fishway body; the upstream and downstream water level difference is divided into a plurality of stages by the vertical slot type separator plates; a pool chamber is formed between the adjacent vertical slot type separator plates; the vertical slot type separator plates are disposed at the central position of the cross section of the fishway body; bottoms of the vertical slot type separator plates are fixed on a base plate of the fishway body; fish passing vertical slots are formed by the pier columns and the vertical slot type separator plates; and the pool chambers are connected via the vertical slots. According to the double-side vertical slot type fishway with high energy dissipation and suitable for bidirectional water flow, excess energy of the upstream and downstream water head is eliminated through water cushions, streamwise fiction and water flow opposite thrust and diffusion between the vertical slot type separator plates, so that the double-side vertical slot type fishway can be suitable for hydraulic engineering having bidirectional water heads at a river side or a sea side, energy dissipation effects are good under forward water flow and reverse water flow conditions, integrity of original population is maintained, and the influence of hydraulic engineering construction on current river channels and biologic chains is maximumly reduced.

Description

technical field [0001] The invention relates to the field of a fishway structure, in particular to a double-sided vertical seam fishway with high energy dissipation suitable for two-way water flow. Background technique [0002] With the increasing demand of human beings for water resources, while the construction of barrage facilities on natural rivers benefits mankind, it also destroys the original appearance of rivers. The original rivers are suitable for the reproduction and growth of local fish. Due to the impact of water conservancy projects on The change of water flow pattern has blocked the passage of migrating fish in the river, and also caused the destruction of the original channel for the downward transport of upstream nutrients and the supplement of fish fry in the upstream spawning area to the downstream fishery resources. The continuity of the river has been damaged to a certain extent. At the same time, the environment of the habitat on which the fish depend h...

Claims

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Application Information

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IPC IPC(8): E02B8/08
CPCY02A40/60E02B8/085
Inventor 傅宗甫崔贞赵国浩诸韬陈月君熊茵王珊
Owner HOHAI UNIV
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