Ecological spur dike with adjustable permeable rate and working method thereof

Abstract

The invention relates to an ecological spur dike with an adjustable permeable rate and a working method thereof. The ecological spur dike comprises a dike body, one side of the dike body is fixedly connected to a river bank, a lower portion of the dike body is fixedly connected to a riverbed, the dike body is perpendicular to the river bank and the riverbed, the dike body comprises a rectangular frame body, and a shutter gate with an adjustable opening degree is arranged in a middle part of the rectangular frame body; and ecological net cages are arranged on an upstream side and a downstream side of the dike body, and filter screens are arranged between the ecological net cages and the dike body. The provided ecological spur dike with an adjustable permeable rate has a reasonable design and a simple structure, is convenient to construct and easy to maintain, has low manufacturing cost, and can adapt to changes of water flows in flood periods and dry periods of most rivers by controlling the opening degree of the shutter gate of the dike body; and the ecological net cages are arranged, an eutrophication degree of a water body can be reduced, biodiversity of a riverway is protected, an aesthetic feeling of the riverway is increased, and requirements of most riverways for water level control and ecology protection are met.

Description

technical field [0001] The invention relates to the field of river regulation buildings, in particular to an ecological spur dam with adjustable water permeability and a working method thereof. Background technique [0002] Spur dikes are widely used in regulation projects such as river courses or waterways. They can protect river bank slopes from scour damage caused by direct water erosion, and also play an important role in protecting water ecological diversity. Most of the existing spur dikes are gravity spur dikes, and once the gravity spur spur dikes are built, the parameters such as height, length and permeability cannot be changed, and it is impossible to make corresponding changes to different water flow patterns during flood and dry seasons. At present, there are some inventions related to permeable spur dikes that improve the technical problems existing in gravity spur dikes. [0003] For example, the patent document with application number CN201910178955.9 disclo...

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Problems solved by technology

[0005] Compared with traditional spur dikes, permeable spur dikes can effectively reduce the erosion of water flow on the dam body. However, when the river environment changes greatly during the year, the operation of the spur dike is not universal because the length of the spur dike is constant and the water permeability of the spur dike is in a fixed range. It still lacks good self-adaptive adjustment ability, which is not conducive to the long-term use of spur dikes

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