Sectored multi-step ecological buffer revetment system

Abstract

The invention discloses a sectored multi-step ecological buffer type revetment system. The revetment system is provided with at least four levels of steps, blocking walls are sequentially arranged on the outer sides of the steps, one plant planting zone is arranged in the blocking wall of each level, soil matrix is arranged in the upper layer of each plant planting zone, yellow sand, ceramsite, soft rock and zeolite are sequentially in the lower layer of the plant planting zone of each level, and emersed landscape plants and submergence-tolerant plants are arranged in the plant planting zone of each level; hydraulic drop platforms are sequentially arranged in the corresponding positions of spaced plant planting zones of the blocking walls; and one guide plate is arranged between each blocking wall and the corresponding hydraulic drop platform; the plant planting zone of the first level is connected with a farmland drainage canal and is sectored towards the downstream to form a hydraulic-drop type hierarchical structure in an open sectored shape, the sector radius is 5-8 m, and the central angle is 45 degrees-75 degrees; and the blocking wall of the last level is connected with a river channel. The sectored multi-step ecological buffer type revetment system not only has the efficacies of protecting river channel side slope, and realizing flood water drainage and water and soil conservation, but also has good purification and landscape effects.

Description

technical field [0001] The invention relates to a river revetment facility, in particular to a fan-shaped multi-step ecological buffer revetment system which has the effect of intercepting and purifying pollutants entering the river channel in the form of surface sources. Background technique [0002] In recent years, agricultural non-point source pollution has become a major water environment problem in my country. Excessive application of chemical fertilizers has led to a large loss of nutrients such as nitrogen and phosphorus, resulting in eutrophication of lakes and other water bodies, making them lose their use value for production and life. And may cause groundwater pollution and even food contamination. The pollution load of agricultural non-point sources COD, N, and P has accounted for 1 / 2-2 / 3 of the water pollution load. After the outbreak of the cyanobacteria event in Taihu Lake, the research on the ecological interception technology of non-point source runoff and ...

AI Technical Summary

Problems solved by technology

These structures occupy a small area and play a certain role in maintaining the stability of the bank slope, preventing soil erosion and flood control safety, but they also have adverse effects on the landscape environment and ecology of the bank slope to varying degrees. The materials used (including The hydration reaction, carbonization reaction of alkalized aggregate) and the reaction of various additives (such as early strength agent, antifreeze agent, expansion agent, etc.) in water affect the water quality; It is difficult for plants and microorganisms to survive and reproduce here, seriously destroying biodiversity, causing deterioration of the water body and land ecological environment, and it is difficult to remove pollutants that enter the river in the form of non-point sources. The construction volume is large and the cost is high

[0005] There are many methods of ecological slope protection technology, such as the use of geotechnical material composite planting base, barbed wire and gravel composite base, geotechnical material soil-fixing planting base, vegetation-type ecological concrete, cement ecological planting base and soil curing agent, etc. Slope protection has a good effect on stabilizing the bank slope structure and improving the bank slope landscape to a certain extent, but it has a very limited effect on intercepting surface pollutants from entering the river, and the cost of organic cementing materials is too high, and the construction volume is relatively large. Large, promotional use is limited

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