A diversion and fixed-point fish dam crossing facility and its application method for improving the survival rate of migration

Abstract

The invention discloses a diversion and fixed-point fish crossing dam facility and a use method for improving the survival rate of migration. The two ends of the main body of the fishway are respectively provided with an upstream advection section and a downstream advection section. Both ends are respectively provided with side openings, the side openings are connected to the hose through the transfer square tube, and the other end of the hose is connected to the fish inlet tube; the ends of the upstream advection section and the downstream advection section adopt a closed structure, and the The middle part is rotated with a pin shaft, one side of the pin shaft has a limiting plate, and the top end of the pin shaft is provided with a steering rod, and the steering rod is hingedly connected with the piston rod of the steering cylinder, and the steering cylinder is installed on the upstream On the advection section and the downstream advection section, limit switches matched with limit plates are installed on both inner walls of the upstream advection section and the downstream advection section. It can realize the purpose of fixed-point transportation or fixed-point fish feeding for migratory fish, and has a wide range of applications. It can be used in dams, fish ponds, and live water captive breeding environments. It is easy to operate and has an alarm function, which is worth promoting.

Description

technical field [0001] The invention relates to the field of ecological hydraulics, in particular to a diversion fixed-point fish dam crossing facility and a use method for improving the survival rate of migration. Background technique [0002] Hydropower is an environmentally friendly power generation method that uses natural water resources to generate electricity. Because of its advantages such as low environmental pollution and sustainable development, a large number of hydropower stations have been built all over the world. After the completion of the power station, it will inevitably cause fish The obstruction of migration activities will easily lead to the destruction of the diversity of fish in the river. In order to ensure the progress of fish migration activities, the design and construction of ecological fishways came into being. Fish complete migration through fishways, and then the reproduction activities of fish can be continued. The channel is fixed and canno...

AI Technical Summary

Problems solved by technology

[0002] Hydropower is an environmentally friendly power generation method that uses natural water resources to generate electricity. Because of its advantages such as low environmental pollution and sustainable development, a large number of hydropower stations have been built all over the world. After the completion of the power station, it will inevitably cause fish The obstruction of migration activities will easily lead to the destruction of the diversity of fish in the river

In order to ensure the progress of fish migration activities, the design and construction of ecological fishways came into being. Fish complete migration through fishways, and then the reproduction activities of fish can be continued. The channel is fixed and cannot be adjusted. Therefore, when the water volume changes, the state and quantity of fish species in different waters will change, and it is easy to cause fish to die in batches and be swallowed directly after migration. There is an urgent need for a Fishways that can improve the survival rate of fish migration activities can solve the above problems, further maintain the diversity of fish in the freshwater environment, and promote ecological stability

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