A fish passing system and method without loss of water resources and free water surface

Abstract

The invention provides a fish passing system and method free of water resource losses and free water surfaces. The fish passing system is composed of a dam, a fish outlet tunnel, a fish inlet tunnel, a fish collection chamber, a fish outlet gate, a fish inlet gate, a downstream river channel, a sound making unit, a light-emitting unit, a power supply, a material injection machine, a material injection pipe, a fish exploration radar and a master control system. Compared with an existing fish way design method, the fish passing system has the remarkable differences that because the fish passing system is provided with fish passing tunnels and the fish collection chamber which have pressure and are free of free water surfaces, fish way establishment and maintenance expenses are remarkably reduced, project construction lands are greatly saved, almost no water resources are consumed by fish passing, and the fish passing efficiency is improved. A designed fish way can be used for temporary food discharge as well.

Description

technical field [0001] The invention relates to the technical field of water conservancy engineering, in particular to a fish passing system and method without loss of water resources and free water surface, and provides a technical solution for the design of fish passages for aquatic animals such as fish downstream of a dam to migrate over a dam. Background technique [0002] The construction of the dam not only saves precious water resources for human beings, but also provides a large amount of clean electricity, and enhances shipping capacity and flood and drought resistance. Moreover, the construction of the dam prevents aquatic animals such as fish downstream of the dam from moving upstream, thus destroying the survival and reproduction system of aquatic animals in the original river channel and breaking the original system balance. Therefore, the dam The construction of dams often requires the construction of corresponding fishways in order to maintain the original wat...

AI Technical Summary

Problems solved by technology

The main disadvantages of this invention are: 1. It needs to consume a large amount of precious water resources; 2. Each level needs to do reciprocating lifting movement, which consumes a lot of energy; 3. It is impossible to eliminate the resistance effect of the water flow on fish migration. ; 4. High construction cost and difficult operation and management

The main disadvantages of this invention are: 1. It is still an open channel flow, which cannot eliminate the resistance effect of the water flow on fish migration; 2. It needs to consume a large amount of precious water resources; 3. The cost of fishway construction is high and the construction large land

The main disadvantages of this invention are: 1. It is still an open channel flow, which cannot eliminate the resistance effect of the water flow on fish migration; 2. It needs to consume a large amount of precious water resources; 3. The partition structure itself may cause Become an obstacle to fish migration; 3. The construction and maintenance costs of this type of fishway are high

[0008] It can be seen that the construction of the dam prevents the migration of fish and other aquatic animals from the downstream of the dam to the upstream of the dam. The existing fishway design is too traditional, the cost of fishway construction and maintenance is high, and the project construction area is relatively large. Not only is there a large amount of water resources for fish feeding, but the effect of fish feeding is often not ideal

For high dams, the problem is even more prominent, and the existing design methods cannot even meet the fish passing requirements

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