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A double-sided vertical slit type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof

A technology of double-sided vertical seams and fishways, which is applied in the field of fish passing buildings, can solve the problems of unfavorable water resource conservation and utilization, sediment deposition, etc., and achieve the effects of simple structure, prevention of sediment deposition, and reduction of impact

Active Publication Date: 2022-02-08
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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  • A double-sided vertical slit type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof
  • A double-sided vertical slit type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof
  • A double-sided vertical slit type fishway pond chamber silt reduction structure, fishway and silt reduction method thereof

Examples

Experimental program
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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 double-sided vertical slit type fishway pond room silt reduction structure, a fishway and a silt reduction method thereof. The flow velocity distribution at the bottom is adjusted by arranging a diversion structure at the bottom of the fishway pond chamber. The bottom flow of the cracks will lead the silt in the middle of the tank chamber into the main flow area on the other side, and then use the mainstream connecting the upper and lower vertical slits to gradually transport the silt downwards, and finally lead it into the river. Its beneficial effects are firstly to prevent the silt accumulation in the fishway pond room, and at the same time, the structure does not need to set up sand guide holes and seams on the partition, and the existing vertical seam for passing fish can be used to transport sand, which can reduce the impact on the fishway. The influence of the fish passing effect also makes the structure of the fishway clapboard simpler. In addition, the present invention makes full use of the water flowing through the fish vertical seam to flush the sand, and does not need to introduce the sand flushing water flow from the reservoir area, which is beneficial to the saving of water resources.

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 Patents(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