A Construction Method of Ecological Flood Defense Embankment in Small and Medium Watersheds

A construction method and technology for small and medium-sized watersheds, applied in breakwaters, buildings, embankments, etc., can solve problems such as blocked material, energy, and information interactions, weakened self-purification capacity of rivers, and broken ecosystem balance, so as to improve overall flood control and water erosion resistance Performance and service life extension effect
CN109811713BActive Publication Date: 2020-03-03CHINA INST OF WATER RESOURCES & HYDROPOWER RES +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
Publication Date
2020-03-03

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Abstract

The invention discloses a method for constructing ecological flood control embankments in medium and small watersheds. The method comprises the following steps: (1), calculating the maximum scouring depth deltaD of a riverbed; (2), calculating the local scouring depth hb; (3), calculating the lengths of tree stumps; (4), smearing the surfaces of the tree stumps with tung oil with the thickness of1-5mm, and drying in sunlight for use; (5), then, arranging the tree stumps on the riverbed of a concave river bank in the downstream direction of a water flow according to the certain density, the certain buried depth and the certain scale, and then planting shrub willows between the tree stumps and a concave bank slope according to the certain density and the certain scale. The ecological embankments for the concave river banks, constructed by the method provided by the method, can effectively deal with the problems of collapse of the concave river banks during river water erosion and the like.
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Description

technical field

[0001] The invention belongs to the technical field of environmental protection engineering, and in particular relates to a construction method of an ecological flood embankment in a small and medium watershed. Background technique

[0002] Slope erosion is the erosion of river channels under natural conditions, such as water flow. Bank collapse is the most common form of erosion. Due to the anti-corrosion performance of the soil and the large slope, under the scouring action of the water flow during the flood period, the foot of the slope is eroded by the water flow, and the slope surface collapses. The curved concave bank is the most severely eroded part of the slope. Since the water flow along the curve is affected by centrifugal acceleration, lateral gradient and secondary flow are generated. The existence of the spiral flow makes the sand concentration and particle size at the concave bank of the bend smaller, and the sand concentration and particle si...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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