Novel fishway structure

Abstract

The invention discloses a novel fishway structure and relates to a fish passing facility for solving the problem that migratory fish swim upwards through a river crossing building. The novel fishway structure comprises fishway side walls, a contraction section and pool chambers, wherein the contraction section comprises long contraction sections and short contraction sections, the long contraction sections and the short contraction sections are oppositely distributed, fish passing vertical gaps are arranged between the long contraction sections and the short contraction sections, and the adjacent pool chambers are communicated through the fish passing vertical gaps; first groups of water blocking piers are arranged in the middles of the pool chambers, second groups of water blocking piers are arranged in the middle lower sections of the pool chambers, and third groups of water blocking piers are arranged in the fish passing vertical gaps. According to the novel fishway structure, plane and spatial three-dimensional zoning is carried out on water flow rates, so that various passing fish objects with different habits can pass in the same fish passing facility. The novel fishway structure has remarkable advantages over the traditional vertical gap type fishway in the term of water flow state. Meanwhile, the novel fishway structure has the function of a bypass channel under the condition of occupying small engineering land and has remarkable advantages on the aspect of engineering investment.

Description

technical field [0001] The invention belongs to the fields of water conservancy engineering and environmental protection engineering, and relates to a fish-passing facility for migrating fish to go up through a barrage structure, more specifically a novel fishway structure. Background technique [0002] At present, there are generally five types of fish passage facilities in river barrage projects, and fishways are the most widely applicable among them. The water flow in the conventional fishway falls at the partition or obstacle, forming a single uniform water flow with a large flow rate, which can only meet the upward tracing requirements of a specific fish passing mature body. It is difficult for other fish with relatively poor swimming ability, or juvenile fish and larvae that are targeted to pass fish, to pass through conventional fishways. The fishways built in my country in the 1950s and 1960s basically belong to this category. In the late last century, Europe began...

AI Technical Summary

Problems solved by technology

In the late last century, Europe began to use side passages (imitation of natural passages), which achieved good fish passing results, but the fish passing water head it adapted to was relatively small, generally within 10m, the slope was relatively gentle, and the area occupied was large. Affecting the economic indicators of the project, it is more difficult to implement the river barrage structures with higher water head, so it is necessary to improve

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