Fish swimming capability testing device and method

A technology for ability testing and fish, which is applied in the field of fish swimming ability testing equipment, can solve problems such as large water surface fluctuations, multiple eddies and dead angles in the test area, and small limit flow velocity, and achieves convenient maintenance, elimination of eddy currents in the test area, and device assembly Easy to disassemble
CN111449007APending Publication Date: 2020-07-28ZHEJIANG INST OF HYDRAULICS & ESTUARY
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHEJIANG INST OF HYDRAULICS & ESTUARY
Publication Date
2020-07-28

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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.
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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...

Claims

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