Ecological environmental-protection permeable spur dike structure

Abstract

The invention relates to an ecological environmental-protection permeable spur dike structure which consists of a river bottom protection structure and a spur dike structure part; the river bottom protection structure consists of a geotechnical waterproof material layer, a grouted rubble layer, a rubble layer and a crushed stone layer from the bottom up sequentially; the crushed stone layer is simply laid within the range of the spur dike structure part; gabion net cages are arranged at the external edges of the river bottom protection structure, then the river bottom protection structure is leveled, and the spur dike structure part is arranged on the leveled crushed stone layer; the spur dike structure part is formed by splicing a dike root, a dike body and a dike head; the dike root is formed by splicing a plurality of entity components, the bottom of each entity component is a plane, and the upper part of each entity component is a sloping surface structure consisting of a riverside slope and a landside slope; the dike body is formed by splicing a plurality of permeable components; the upper parts of the permeable components are sloping surface structures consisting of riverside slopes and landside slopes; and permeable holes are formed in the middles of the permeable components. The permeable holes of the permeable components are arch-cave-shaped, so that flow turbulent fluctuation at the permeable holes and erosion to the dike body are reduced, and harm to fish in water is reduced.

Description

technical field [0001] The invention relates to the field of design and construction of a spur dike for waterway regulation, in particular to an ecological environment-friendly permeable spur dike structure. Background technique [0002] Spur dikes play an important role in adjusting water flow structure and improving local waterway conditions, and are one of the most commonly used renovation structures on the Yangtze River. However, due to the complex water flow structure and hydraulic characteristics, the foundation and sediment at the head and root of traditional spur dikes are scoured and eroded all the year round, resulting in hollowed out foundations or local scour pits, which reduces the stability of the dam body , Inducing flooding of spur dams. Compared with solid spur dikes, permeable spur dikes have the advantages of smaller local scour depth at the dam head, slowing down the flow velocity of water passing through the dam, adapting to various flood standards, and...

AI Technical Summary

Problems solved by technology

The spur dikes mentioned above all have their own advantages, but also have their disadvantages and limitations

The gabion spur dam is cheap but lacks in integrity; the permeable pile dam and the hydraulic insert spur dam are both suitable for use in the sandy river section, but not suitable for the application in the Yangtze River; the Twisted Wang block face protection dam is expensive and difficult to install; the tetrahedral permeable frame spur dam is easy to install. Instability phenomena such as sliding, overturning, and rolling occur, resulting in the drop and loss of the tetrahedral permeable frame, thus losing the renovation effect

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