Ecological fishway with high and low inlets and main and auxiliary outlets being in vertical seam type

Abstract

The invention discloses an ecological fishway with high and low inlets and main and auxiliary outlets being in a vertical seam type. A dam used as a river-blocking hydro-project and an engineering power generation plant are arranged in a river. The ecological fishway with the high and low inlets and the main and auxiliary outlets being in the vertical seam type is characterized by being composed of a dam downstream ecological fishway body and a dam upstream ecological fishway body, wherein the dam downstream ecological fishway body is composed of a water replenishing channel, a water replenishing groove, a fish collecting groove, a fish collecting groove fish inlet hole, a downstream main and auxiliary fishway water discharge converging pool, a bank type fish inlet, a downstream low fish inlet, a downstream high fish inlet, a downstream main fishway vertical seam type pool chamber, a downstream auxiliary fishway vertical seam type pool chamber, a downstream main and auxiliary fishway water feeding converging pool, an observation chamber, a downstream fishway vertical seam type pool chamber and the like; the dam upstream ecological fishway is composed of an upstream fishway verticalseam type pool chamber, an upstream main fish outlet, an upstream auxiliary fish outlet, an upstream auxiliary fish outlet and the like. The ecological fishway with the high and low inlets and the main and auxiliary outlets being in the vertical seam type has the advantages that fishes can smoothly pass through the dam and be adapted to the change amplitude between the upstream water level and the downstream water level, the fish passing effect is good, economical efficiency and practicability are achieved, the structure is simple, and construction is convenient; and the ecological fishway with the high and low inlets and the main and auxiliary outlets being in the vertical seam type is suitable for medium and low water head river-blocking hydro-projects.

Description

technical field [0001] The invention relates to a fish passing facility used in a river barrage water conservancy project, in particular to an ecological fishway with high and low inlets and vertical slits for main and auxiliary outlets. Background technique [0002] In order to develop and utilize water resources, the river barrage water conservancy project will produce huge economic and social benefits after the completion of the project, and at the same time, it will also have a significant impact on the water ecological environment. For fish, due to changes in natural habits such as foraging, breeding, and overwintering, Fish migration or other activities are thereby delayed or terminated. In order to protect fish resources and restore river biodiversity, according to the "Water Law of the People's Republic of China", "Fishery Law of the People's Republic of China" and other laws and regulations, permanent barrages and dams will be built on rivers where aquatic organisms...

AI Technical Summary

Problems solved by technology

Fish lifting machines, fish transport facilities and fish locks are generally suitable for medium and high water head dams. Some water conservancy projects of large rivers and rivers are low water head water conservancy projects. The above three schemes are discontinuous, unstable, and complicated to operate. Not suitable for reasons such as high operating costs

Imitation of natural channels is mainly used in low water head water conservancy projects, but the ability to adapt to water level changes is poor. Most of the downstream water level of most projects has a large range of changes, and is limited by the engineering terrain. Imitation of natural channels is difficult to arrange due to the gentle slope, wide channel, and large footprint. great

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