Fish swimming capability testing device and method

Abstract

The present invention discloses a fish swimming capability testing device and method. The fish swimming capability testing device comprises a closed annular water tank, a water flow driving device anda flow rate measurement device, a first testing area and a second testing area are arranged in the closed annular water tank, the first testing area comprises a first testing section, and a first rectifying grid plate and a first flow guiding grid plate separately positioned at upper and lower parts of the first testing section, the second testing area comprises a second testing section, and a second rectifying grid plate and a second flow guiding grid plate separately positioned at upper and lower parts of the second testing section, and a water passing area adjusting device is also arrangedon the second testing section; a driving end of the water flow driving device extends into the closed annular water tank and is arranged at the upper part of the second testing area; and the flow rate measurement device is arranged in the first or second testing area. Swimming ability parameter indexes obtained by tests are applied to designs of fish ways such as gate dams, etc., so that fish passing efficiency of the fish ways is improved, and a function of the fish ways serving as the only ecological compensation engineering measure is further exerted.

Description

technical field [0001] The invention relates to the experimental field of ecological environment protection in water conservancy projects, in particular to a fish swimming ability testing device and method. Background technique [0002] my country is the country that builds the most dams in the world. According to the first water conservancy census data from 2010 to 2012, 980,002 dams have been built and 268,476 sluices have a flow rate of 1 cubic meter per second and above. These water conservancy projects are in While benefiting and eliminating harm, it also causes a series of negative impacts on the river ecosystem. The most direct impact is to destroy the longitudinal connectivity of the river and cut off the upward passage of fish, especially for fish with wandering habits, which seriously affects the living habits of fish such as baiting, overwintering, and spawning, resulting in fish The loss of population diversity and the deterioration of the quality of economic fis...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the embodiments of the present invention is to provide a fish swimming ability test device and method to solve the problem that the existing fish swimming ability test device has many eddies and dead angles in the test area, the limit flow velocity is too small, the water surface fluctuates greatly, and the propeller is high. The speed is easy to generate air bubbles, the test area cannot be adjusted, and the single test area and other problems

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