Ecological hydro-junction facility applicable to river and lake communication

Abstract

An ecological hydro-junction facility applicable to river and lake communication comprises a submerged weir, water release gates, blow sand gates, gate piers, a ship lock, a guide wall and gate hoists. In a flood season, the water release gates and the blow sand gates are opened to enable part of river water to flow into a lake region and relieve the downstream flood prevention pressure, fishes migrate through the gates to lay eggs and find foods, and the gates are closed after the flood season ends. During the dry period, the blow sand gates are opened to feed water to the downstream to washsediment deposited in the lake region to the downstream and guarantee water abundance of the lake region. Exchange of a water body of the lake region and the river water is realized through the submerged weir throughout the year for fish swimming. The ecological hydro-junction facility is a gate and weir combined allocation open type regulation and control junction. While the defects of a hydro-junction are overcome, the problems of inadequate bearing capacity of water resources and water environments of river-communicating lake regions during the dry period and the like are effectively alleviated.

Description

technical field [0001] The invention belongs to the field of water conservancy engineering and relates to an ecological water conservancy hub facility suitable for connecting rivers and lakes. Background technique [0002] Rivers, rivers, and lakes in inland watersheds often meet and connect, forming a complex water system relationship of mutual influence and dependence coexistence, which often has complex characteristics of large span, multi-dimensional, and multi-factor coupling. In recent years, due to strong human disturbances (such as water conservancy projects, water intake projects, etc.), the evolution of the relationship between rivers and lakes has become increasingly tense, and the spatiotemporal distribution of water volume has been split. Deterioration of health status and many other ecological problems. [0003] Water conservancy engineering is a combination of different types of hydraulic structures to meet the needs of various water conservancy projects. Mo...

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Problems solved by technology

Most of the existing water conservancy project hubs are mainly based on river dams, supplemented by ship locks for navigation and fishways for fish migration. While they play a beneficial role, they also have many disadvantages: (1) Water storage in the reservoir area during dry seasons, downstream The amount of water in the river is reduced, and the ecological environment such as lakes and wetlands is destroyed; (2) Barrage dams hinder fish migration and affect fish reproduction; (3) The survival rate of fish passing through fishway facilities is not high, and the effect of passing fish is not good; (4) The water flow velocity in the reservoir area slows down, and the water quality deteriorates, especially below the dead water level; (5) The sediment deposition in the reservoir area, and the erosion and erosion of the downstream riverbed

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