A kind of ecological auxiliary fishway for weir and dam

Abstract

The invention discloses an ecological auxiliary fishway for weirs and dams, which comprises a positioning rod fixed on a gate plate and a plurality of cubic frames, the frames are composed of square rods, and one side of the frames is fixed with A ring-shaped shroud, the thickness of each side of the shroud is equal to and equal to the thickness of the square rods that make up the frame, and a front plate is sealed and fixed on the opposite side of the frame to the shroud, and the front plate A number of flow holes are opened, a side plate is hinged on the four sides of the frame, a torsion spring is arranged at each hinge, and an annular limit plate. The advantage is that the following magnetic ring of the present invention is captured by the magnetic attraction force of the positioning magnetic ring, and the frame continues to move under the action of the driver so that the following magnetic ring moves relative to the frame until it does not constrain the side plate, and the side plate is under the action of the torsion spring When it is opened, the fish in it can swim out to complete the migration from the downstream to the upstream, ensuring that the fishway has a good fish passing ability.

Description

technical field [0001] The invention relates to the technical field of hydraulic engineering ecological environment, in particular to an ecological auxiliary fishway for weirs and dams. Background technique [0002] After the completion of the water conservancy project in the water conservancy project, the migration route of the fish was blocked, and the longitudinal connectivity of the river was destroyed, so that the fish in the lower reaches of the river could not go up to reproduce, and the fish in the upper reaches could not migrate back to the downstream. With the development of the continuous system theory of rivers, the advantages of the internal environment of rivers and continuous water bodies in terms of ecological diversity and impact resistance have been paid more and more attention. It is an urgent need in the field of water ecology to find a means to effectively improve the connectivity and connectivity of rivers and restore river ecology. Therefore, in order...

AI Technical Summary

Problems solved by technology

[0002] After the completion of the water conservancy project in the water conservancy project, the migration route of the fish was blocked, and the longitudinal connectivity of the river was destroyed, so that the fish in the lower reaches of the river could not go up to reproduce, and the fish in the upper reaches could not migrate back to the downstream.

Images