System and method for sorting fishes passing fish way

Abstract

The invention discloses a system for sorting fishes passing a fish way and relates to the field of fish way engineering. The system comprises a sorting chamber, a sorting tank, a releasing tank, a restoring pond and a discharge pipe, the sorting chamber is arranged above an observing chamber, the sorting tank is respectively connected with a lifting gate chamber and the restoring pond, a sorting tank inlet gate is arranged at a junction of the sorting tank and the lifting gate chamber, a sorting tank outlet gate is arranged at a junction of the sorting tank and the restoring pond, and a sorting platform is arranged on one side of the sorting tank; the releasing tank and the sorting tank are parallelly arranged side by side, one end of the releasing tank is communicated with the restoring pond, and two ends of the discharging pipe are respectively communicated with the restoring pond and a fish way body. The system overcomes the defects that the prior art is unsupportive of sorting or low in sorting efficiency, a fishing net is prone to causing damage to fishes in the process of fishing and analyzing, dehydration operation is prone to causing fish death, the fishes need to be moved out of the fish way after fish collection for sorting, identifying and measuring, and the lifting process is time-consuming and labor-consuming. The invention further discloses a method for sorting the fishes passing the fish way.

Description

technical field [0001] The invention relates to the field of fishway engineering, in particular to a system for sorting fish passing through the fishway. The invention also relates to a method of sorting fish passing through a fishway. Background technique [0002] While water conservancy and hydropower projects exert their benefits in flood control, power generation, and shipping, they also have a non-negligible impact on the ecological environment, especially the barrier impact on fish migration channels; Fish protection measures have been adopted internationally for more than 300 years. The main types include fishways, fish elevators, lifting lock chambers, and fish collection and transportation systems. Among them, fishways have the best fish passing effect and the widest range of applications. Fishways account for about 90% of the built fish passing facilities in my country. [0003] The monitoring of fishways has always been an important link in the operation of fishwa...

AI Technical Summary

Problems solved by technology

[0004] At present, domestic and foreign monitoring schemes basically set up observation rooms directly on the side walls of fishways to observe migratory fish in fishways. They can only observe and count fish, but cannot collect and sort fish, and cannot monitor fish. identification and measurement of fish species, etc.; the currently used video and infrared monitoring cannot realize the identification and measurement of fish species, etc.

[0005] According to the prior art, if it is necessary to identify the species and specifications of the passing fish, it is generally divided into two methods: one is to intercept some pond chambers with a net, and use fishing gear and nets to fish out the fish therein; The fishway exit gate is closed, and part of the pond water is emptied, and then the fish are taken out for sorting and statistics; the above two methods have the following disadvantages: (1) only the fish in several ponds can be sorted and analyzed instantaneously , the sorting amount is small, and the sorting efficiency is low. If complete sorting and statistics are required, multiple fishing is required; (2) During the sorting process, the net gear is easy to cause damage to the fish, and there is a dehydration operation, which can easily lead to fish death (3) The sorting, identification and measurement work after fish collection needs to lift the fish out of the fishway, and the lifting process is time-consuming and laborious

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