Ecological spur dike of fish nest

Abstract

The invention relates to an ecological spur dike of a fish nest, one end of the spur dike of the fish nest is connected with a river bank, the other end extends to a dike-shaped building in a river channel, the spur dike and the river bank are connected into the shape of T on the plane, and the ecological spur dike of the fish nest is characterized in that a plurality of water permeable frameworks are arranged at the bottom on the periphery of a dike body, each water permeable framework is a hollow oblique cube, and the height of each oblique cube is 1 / 2 of the height of the dike. Compared with the conventional spur dike, the ecological spur dike of the fish nest has the following advantages: (1) ecological effect; (2) high stability; and (3) same control effect. The ecological spur dike of the fish nest is conductive to adhesion and survival of various aquatic organisms, low-turblence regions in water permeable framework bodies on the periphery of the ecological spur dike of the fish nest are conductive to retention and adsorption of the aquatic organisms, and strong-turblence zones further provide water playing space for fish, thereby meeting the demands of a variety of biological characteristics and having the obvious ecological effect. The maximum scour depth of a dike head and the range of a scour pit of the ecologic spur dike of the fish nest are reduced, and the scour pit is in the trend of moving downstream to the direction which is far away from the dike head, thereby being conductive to stabilizing the dike body.

Description

technical field [0001] The invention relates to a spur dam (a spur dam), in particular to a fish nest ecological spur dam with a new structure. Background technique [0002] Groove dam, also known as T-shaped dam, is the most commonly used type of river channel regulation and channel regulation structure. It is a dam-shaped building with one end connected to the river bank and the other end extending to the river channel. It is connected to the river bank in a T-shape on the plane. In the river control project, the spur dike protects the river bank from erosion by deflecting and diverting the flow; in the channel improvement project, it satisfies the navigation depth by narrowing the river channel and converging water to attack sand. There are many types of spur dikes, which can be classified into linear, hook-shaped and T-shaped according to the plane shape. As far as the materials for constructing spur dikes are concerned, block stone spur dikes are most commonly used in ...

AI Technical Summary

Problems solved by technology

The ecological investigation of the Xijiang River shows that the development of the waterway improvement project of the Xijiang River has reduced the quality of habitat conditions and even caused the loss of the original biological habitat, which will have an adverse impact on the survival of benthic animals; The spawn ground of the

Therefore, while spurting water to attack sand to meet the navigation depth, it also destroys and threatens the river ecosystem, and the formation of scour pits at the head of the dam brings new problems to the stability of the dam body

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