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Vertical seam type fishway with bifurcation sections

A bifurcation section and fishway technology, applied in water conservancy projects, marine engineering, coastline protection, etc., can solve problems such as no mature and complete design methods, achieve good water flow environment, improve water flow structure, and restore physical strength

Inactive Publication Date: 2015-06-03
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are few reports on the research results on the bifurcation section of the vertical seam fishway at home and abroad, and there is no mature and complete design method for reference

Method used

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  • Vertical seam type fishway with bifurcation sections
  • Vertical seam type fishway with bifurcation sections
  • Vertical seam type fishway with bifurcation sections

Examples

Experimental program
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Effect test

Embodiment 1

[0022] This embodiment is a kind of vertical seam type fishway with bifurcation section, such as figure 1 as shown, figure 1 Arrows in indicate the direction of water flow into and out of the fishway. This embodiment includes: a main section composed of a plurality of pools 1 with inclined bottoms connected in series, and the partitions 2 arranged on the left bank or the right bank and the partitions arranged on the right bank or the left bank are relatively staggered from the partitions between the pools. The guide plate 3 is separated, and the bifurcation section that makes the fishway bifurcate is set in the described pool, and the bifurcation section includes 2-4 bifurcation sections that are connected in series and parallel to the main section pool, and the bifurcation section The pool in the bifurcation section is provided with the same clapboard and guide plate as the pool in the main section, and the main section and the bifurcation section are connected through a bif...

Embodiment 2

[0034] This embodiment is an improvement of the first embodiment, and is a refinement of the first embodiment on the bifurcation section. The bifurcation section described in this embodiment is divided into an upstream bifurcation section and a downstream bifurcation section. side; the partitions and guide plates of the pools in the downstream bifurcation section and the partitions and guide plates of the pools in the main section are arranged on different sides.

[0035] The upstream bifurcation section is set at the water inlet upstream of the fishway, or the fish outlet. And the downstream bifurcation section is arranged at the water flow outlet downstream of the fishway, which is the import of fish.

[0036]The meaning of setting the partitions and guide plates of each pool in the upstream bifurcation section to the same side or the opposite side as those in the main section is: if the partitions of the bifurcation section are set on the left bank and the guide plates are...

Embodiment 3

[0038] This embodiment is an improvement of the second embodiment, and is a refinement of the rectifying guide plate in the bifurcation pool of the second embodiment. In the upstream bifurcation pool described in this embodiment, the rectifying guide plate is arranged on the outer wall of the bifurcation pool in front of the bifurcation opening of the bifurcation section. The rectifying guide plate in the downstream bifurcation pool is arranged on the partition plate separating the bifurcation pool and the downstream pool.

[0039] In this embodiment, on the basis of the second embodiment, a rectification guide plate is set in the bifurcation pool to improve the water flow structure in the bifurcation pool. Since the positions of the upstream and downstream partitions and guide plates change, the setting of the guide plates needs to be analyzed and treated separately. Figure 2-5 It illustrates the change of the water flow structure in the bifurcation pool after the guide pla...

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Abstract

The invention relates to a vertical seam type fishway with bifurcation sections. The vertical seam type fishway with the bifurcation sections comprises a main section and the bifurcation sections enabling the fishway to be bifurcated, wherein the bifurcation sections are parallel with the main section, and the main section and the bifurcation sections are connected through bifurcation pools with horizontal pool bottoms. Each bifurcation pool comprises a main section bifurcation port and a bifurcation section bifurcation port, wherein the main section bifurcation port is parallel with the bifurcation section bifurcation port. A rectification guide plate is further arranged in each bifurcation pool, and gates are arranged in the pools adjacent to the main section bifurcation ports and the bifurcation section bifurcation ports. According to the vertical seam type fishway with the bifurcation sections, the bifurcation sections are arranged at the upstream and the downstream, and the gates of the bifurcation sections are opened and closed properly in the period when the water level is relatively stable, so that fishes can go in and out of the fishway conveniently according to the needs. The rectification guide plate is properly arranged in each bifurcation pool, the water flow structure in each bifurcation pool is obviously improved, and smooth transition from the bifurcation sections to the main section is achieved. The bifurcation pools provide a wide rest space for fishes, have the functions as a rest pool, and help the fishes recover strength in the upstream sailing process.

Description

technical field [0001] The invention relates to a vertical seam type fishway provided with bifurcation sections, which is a hydraulic facility and an environmental protection facility for sluices and dams. Background technique [0002] The vertical seam fishway is generally provided with an entrance and an exit. The entrance and exit mentioned here refer to the entrance and exit of fish. Since the fluctuation range of the upstream and downstream water levels is often relatively large, and the floor elevations of the inlet and outlet are constant, when the upstream water level drops below the floor elevation of the outlet, there will be no water flow in the fishway. Similarly, when the downstream water level drops below the elevation of the inlet floor, the water flow at the inlet of the fishway is suspended, and fish cannot swim into the fishway from the inlet. In order to make the fishway operate normally when the water level fluctuates greatly, it is often necessary to se...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02B8/08
Inventor 孙双科边永欢柳海涛姜涵郑铁刚吕强
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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