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Bilateral vertical seam type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof

A technology of double-sided vertical joints and fishways, which is applied in the field of fish-passing buildings, can solve the problems of sedimentation and unfavorable water resource conservation and utilization, and achieve the effects of preventing sedimentation, simple structure, and water resource conservation

Active Publication Date: 2022-01-04
TIANJIN RES INST FOR WATER TRANSPORT ENG M O T
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of this, the present invention aims to propose a double-sided vertical slit type fishway pond room silt reduction structure, fishway and its silt reduction method, thereby solving the deficiencies of the prior art, solving the problem of sediment deposition in the backflow area, and Problems that are not conducive to the conservation and utilization of water resources

Method used

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  • Bilateral vertical seam type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof
  • Bilateral vertical seam type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof
  • Bilateral vertical seam type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Such as Figure 2-Figure 3 As shown, a double-sided vertical slit type fishway pond room silt reduction structure, the silt reduction structure includes a longitudinal diversion ridge 1 and an oblique flow guide sand ridge 2, and the longitudinal diversion ridge 1 and oblique flow guide The sand ridges 2 are all arranged at the bottom of the fishway pond chamber 3;

[0029] The longitudinal diversion ridge 1 is used to block the bottom flow of the upper vertical seam 4 from entering the lower vertical seam 4, leading it into the silt area 5, and flushing sand for the fishway pond chamber 3;

[0030] The oblique diversion guide sill 2 is used to adjust the water flow guided by the longitudinal guide sill 1 into the silt zone 5 and to guide the sediment into the mainstream zone 6 of the fishway pond chamber 3 .

[0031] It prevents the sediment deposition in the fishway pond room, and the use of the existing fish vertical seam to transport sand can reduce the impact on t...

Embodiment 2

[0038] Such as Figure 4-Figure 5 As shown, the difference from Example 1 is that the silt reduction structure only includes a longitudinal diversion sill 1, and the longitudinal diversion sill 1 is arranged at the bottom of the fishway pond chamber 3;

[0039] The longitudinal diversion sill 1 is used to block the bottom flow of the upper vertical seam 4 from entering the lower vertical seam 4, leading it into the silt area 5, and flushing sand for the fishway pond chamber 3.

Embodiment 3

[0041] The difference from Embodiment 1-Example 2 is that, further, the longitudinal diversion ridge 1 and the oblique diversion diversion ridge 2 are both movably arranged at the bottom of the fishway pond chamber 3 .

[0042] Specifically, a movable connection structure can be used, which is arranged at the edge or bottom of the longitudinal diversion ridge 1 and the oblique diversion diversion ridge 2, for faster installation on the bottom of the fishway pond chamber 3, and when there is damage , It can be easily maintained and replaced, and at the same time, it is convenient to adjust the angle and position according to the effect of reducing silt.

[0043] Wherein, the movable connection structure is not limited to the connection structure in the prior art, such as a bolt, a slot, and a clamping structure arranged at the edge or at the bottom.

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Abstract

The invention relates to a bilateral vertical seam type fishway pond chamber silt reduction structure, a fishway and a silt reduction method thereof. A flow guide structure is arranged at the bottom of a fishway pond chamber to adjust bottom flow velocity distribution, firstly, silt in the middle of the pond chamber is guided into a main flow area on the other side through underflow of a fish passing vertical seam on one side; and the silt is conveyed downwards step by step through the main flow connecting the upper vertical seam and the lower vertical seam and finally guided into a river channel. The structure has the advantages that sediment accumulation in the fishway pond chamber is prevented, sand guide hole seams do not need to be additionally formed in the partition plate, sand is conveyed through existing fish passing vertical seams, the influence on the fish passing effect of the fishway can be reduced, and a fishway partition plate structure is simpler; and in addition, the water flow of the fish passing vertical seam is fully utilized to flush sand, the sand flushing water flow does not need to be introduced from the reservoir area, and water resources are saved.

Description

technical field [0001] The invention relates to the technical field of fish passage buildings, in particular to a double-sided vertical slit type fishway pond chamber silt reduction structure, a fishway and a silt reduction method thereof. Background technique [0002] Fishways are fish passage structures set up at water conservancy projects such as dams or natural obstacles to communicate fish migration channels. The construction of fishway projects can alleviate the barrier effect of obstacles to a certain extent, and is of great significance to the protection of fish resources and the maintenance of river biodiversity. The types of fishways mainly include imitation of nature, vertical slit, pond weir, orifice, etc. Among them, the vertical slit fishway has the advantages of being simple in structure, able to adapt to large water level changes and suitable for fish migration in different living water layers. , is the most widely used fishway form at home and abroad. Acco...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02B8/08
CPCE02B8/085Y02A40/60
Inventor 张杰李君涛冯小香张智鹏刘海英王曦
Owner TIANJIN RES INST FOR WATER TRANSPORT ENG M O T