Multi-population target flowing speed construction method of fish way monitoring system

Abstract

The invention discloses a multi-population target flowing speed construction method of a fish way monitoring system. The method comprises the following steps: fish types are determined; the fish types with the migration demands are determined in the present fish season according to fish type research data and fish way construction demands; a lowest flowing speed vmin of a fish way is determined; a minimum value of an induction flowing speed vf1 is taken from the fish types; a highest flowing speed vmax of the fish way is determined; a characteristic flowing speed section vch is selected; a candidate flowing speed vca section of a control section is determined; after a fish way water heat change range and an inlet flow change range are discretized, a candidate flowing speed section vca-i of the section is respectively calculated when the fish way water head and the flow are certainly according to different combinations; and a target flowing speed section vtg-i of the control section is determined. The method has the advantages of improving the fish way target flowing speed selecting section accuracy, satisfying comprehensive target flowing speed section of multiple fish types at different times and effectively improving the fish effect of the fish way.

Description

technical field [0001] The invention relates to the field of fishway engineering, and more particularly relates to a method for constructing multi-group target flow velocity of a fishway monitoring system. Background technique [0002] Fish pass is a kind of dam or sluice passing fish building. It is a channel for fish to migrate. It is generally realized by building artificial water tanks on sluices or dams to maintain the natural habits of fish, thereby protecting fish resources and maintaining River biodiversity. [0003] According to incomplete statistics, there are currently more than 400 fish-passing buildings in North America and more than 1,000 in Japan. However, the construction and research history of fish-passing buildings in my country is relatively short. By the 1980s, the fishway facilities built in my country More than 20 years after the Gezhouba Water Conservancy Project adopted measures to build a proliferation and release station to solve the protection pro...

AI Technical Summary

Problems solved by technology

The main disadvantages of existing methods for confirming the target flow rate of fishways are: only for a single or a small number of main fish; the confirmation of flow rate mainly depends on empirical values, and the range of flow rate is relatively rough and the accuracy is not high

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