Vertical seam type fishway with bifurcation sections

A bifurcation section and fishway technology, applied in water conservancy projects, sea area projects, coastline protection, etc., can solve problems such as no mature and complete design methods, and achieve the effects of good water flow environment, physical recovery, and open rest space

Inactive Publication Date: 2014-06-04
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

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
Comparison scheme
Effect test

Example Embodiment

[0021] Example one:

[0022] This embodiment is a vertical seam fishway with branching sections, such as figure 1 As shown, figure 1 The arrows in indicate the direction of the water flowing in and out of the fishway. This embodiment includes: a main section formed by 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. The guide plates 3 are separated, the said pool is provided with a bifurcated section that bifurcates the fishway, and the bifurcated section includes 2-4 bifurcated sections connected in series and parallel to the main section of the pool. The pool in the bifurcation section is provided with the same partitions and guide plates as the pool in the main section. The main section and the bifurcation section are connected by a bifurcation pool 6 with a horizontal pool bottom, and the...

Example Embodiment

[0033] Embodiment two:

[0034] This embodiment is an improvement of the first embodiment, and is the refinement of the bifurcation section in the first embodiment. The bifurcation section described in this embodiment is divided into an upstream bifurcation section and a downstream bifurcation section. The partitions and guide plates of each pool in the upstream bifurcation section are set to be the same as the partitions and guide plates in each pool of the main section. Side; the partitions and guide plates of each pool in the downstream bifurcation section and the partitions and guide plates of each pool in the main section are set to different sides.

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

[0036] The partitions and guide plates of the pools in the upstream bifurcation section and the partiti...

Example Embodiment

[0037] Example three:

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

[0039] In this embodiment, on the basis of the second embodiment, a rectifying guide plate is set in the branch pool to improve the water flow structure in the branch pool. Due to changes in the positions of the partitions and guides on the upstream and downstream, the setting of the guides needs to be analyzed and treated separately. Figure 2-5 Explains the change of the water flow structure in the bifurcated pool after the guide plate is not set...

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PUM

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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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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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