Small and medium-sized ecological weir and method for regulating and controlling fish water flow habitat

Abstract

The invention discloses a small and medium-sized ecological weir and a method for regulating and controlling a fish water flow habitat. The weir comprises a weir body, gates, gate chambers, guide rails and an intelligent control system; the functions of a biological migration channel and regulating and controlling gates are combined; the connectivity of water bodies on the upstream side and the downstream side of the weir is effectively guaranteed; and meanwhile, the effect of fish habitat communication is achieved. The regulation and control gates are arranged at the biological migration channel and at the gate chambers in a stepped mode, the discharge amount of river channel water flow is controlled in a transverse opening and closing mode, and a plurality of water permeable holes are formed in the gates so as to relieve the impact effect of the water flow on the gates and the weir. The gate chambers are arranged in the weir body, the sizes of the gate chambers are suitable for arrangement of the gates correspondingly, and guide rails are arranged at the bottom ends of the gate chambers and are used for guiding the gates to move transversely. The intelligent control system can accurately measure the water level and flow on the upstream side and the downstream side of the weir and correspondingly calculate and process the water level and flow, the opening and closing combination mode and opening degree of the gates are intelligently adjusted and controlled, and the flood discharge capacity of a river channel is effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical fields of water conservancy, fishery and agriculture, and in particular relates to a medium-sized and small ecological barrage and a method for regulating fish water flow habitat. Background technique [0002] In order to meet the people's growing living standards and the needs of rapid industrial and agricultural production and development, since the founding of New China, our country has built a series of barrages and dams, especially in small and medium-sized rivers in hilly areas, which have brought great pressure to the local river basins. Significant economic and social benefits. However, the construction of traditional barrages and dams is mainly for the purpose of flood control, water storage, and irrigation, without comprehensively considering the following negative impacts on the river ecological environment: [0003] 1. Changes in hydrodynamic conditions. The construction of traditional barrages chang...

AI Technical Summary

Problems solved by technology

The construction of traditional barrages changes the water potential of the river, blocks the original river runoff, raises the water level upstream of the barrage, creates a still water area, and greatly reduces the flow and velocity of downstream water flow

During the flood period, the phenomenon of water flow overflowing the weir will appear again, and due to the large water level difference between the upstream and downstream, the water flowing through the weir will hit the downstream at a high speed, which will easily cause problems such as river erosion and bank collapse.

[0004] 2. Exacerbate the deterioration of river water quality

As the river ecosystem is isolated by the barrages, the original hydrological laws and hydrodynamic conditions have changed, and the habitats of aquatic organisms upstream and downstream of the barrages have been fragmented, especially the channels for the upstream and downstream free migration and migration of organisms have been cut off. The connectivity of the community is weakened, the population size is reduced, and the biodiversity is reduced

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