Permeable ecological spur dike

Abstract

The invention discloses a permeable ecological spur dike. A plurality of permeable holes are formed in a dike body of the spur dike in a penetrating mode, the permeable holes are horizontally formed, and the axes of the permeable holes deflect towards the direction of a river deep groove. The angle of the axes of the permeable holes deflecting towards the direction of the river deep groove is 10-12 degrees. According to the permeable ecological spur dike, the permeable holes are formed in the dike body, the local scouring strength of the dike body is reduced, and the stability of the structure is facilitated; the permeable holes penetrate through the dike body and are arranged in the mode of deflecting towards the direction of the river deep groove, a turbulent structure near the dike body can be effectively slowed down, and flow slowing and siltation promotion are facilitated; and the permeable holes can provide a certain habitat for aquatic animals such as fishes and shrimps, and the local micro-habitat of a river is improved. Compared with a solid spur dike, the permeable spur dike has a certain permeable rate, the scouring strength of a dike head is smaller than that of the solid spur dike, and the safety of the structure is high. In addition, the permeable holes can provide a certain habitat environment for the animals, and the improvement of a river micro-ecosystem is facilitated.

Description

technical field [0001] The invention relates to an inland waterway regulation project, in particular to an ecological spur dam structure. Background technique [0002] The spur dam is one of the most commonly used renovation structures. The root of the spur dam is connected to the river bank, the head of the dam extends to the center of the river, and the axis of the dam is orthogonal or oblique to the direction of the water flow, forming a T-shape with the river bank on the plane. The spur dam is a water-blocking structure, and is generally built on the side of the beach and opposite the navigation channel. In the waterway improvement project, the water flow dynamic axis is deflected and tends to the opposite bank by beaming water to attack sand, so as to achieve the function of increasing the water depth of the channel. [0003] While the spur dike is sinking the channel, because the spur dike narrows the channel section and changes the surrounding water flow conditions, ...

AI Technical Summary

Problems solved by technology

Especially for solid spur dikes, due to their high water blocking rate, the water flow is highly squeezed near the head of the dike, and the strong turbulent flow structure formed results in significant local scour at the dike head, often causing flooding of spur dikes and endangering the safety of buildings

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