Underwater revetment based on ecological bags and water body ecological management method

Abstract

The invention relates to an underwater revetment based on ecological bags and a water body ecological management method. The method comprises a first step of dredging and solidifying, a second step of establishing a water bottom foundation, a third step of clearing up the revetment surface, a fourth step of paving the ecological bags in a step-shaped lamination dislocation mode from the top of the water bottom foundation, a fifth step of planting submerged plants on the ecological bags, a sixth step of stopping river closure or beginning to coffer after the water quality conforms to or superior to the fourth scale of the national surface water environment criterion GB / 3838-2002, wherein when the water quality does not conform to or inferior to the fifth scale of the GB / 3838-2002, microbial preparation is added into the water according to the water quality measuring result, and a seventh step adding filter feeder fishes or / and herbivorous fishes, shrimps and demersal mussel animals. The method guarantees that floodwater can be drawn off based on the fact that the underwater revetment structure of rivers and lakes is safe, and the cooperative management capacity for the water body is improved through ecological restoration of the underwater revetment.

Description

technical field [0001] The invention relates to an environment treatment method, in particular to an ecological bag-based underwater slope protection and water body ecological treatment method, and is a comprehensive system engineering for flexible ecological slope and water body treatment. Background technique [0002] The traditional water conservancy slope protection scheme mainly focuses on the functional requirements of flood discharge and shipping. For the bank protection and slope protection works of rivers and lakes, the safety and durability of the engineering structure are mainly considered. Therefore, the governance model mostly adopts linear river channels and Channelization of rivers, using hardened materials such as masonry, concrete or reinforced concrete, rarely takes into account the ecological functions of the river. [0003] The above-mentioned channelized and hardened water conservancy slope blocks the communication between river water and groundwater, an...

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Problems solved by technology

[0003] The above channelized and hardened water conservancy slopes block the communication between river water and groundwater, and at the same time cause the soil behind the hardened slope to become alkaline, become dead soil, lose nutrients, lose the growth environment for shore plants, and lose the growth and reproduction environment of microbial communities , aquatic animals disappear or even become extinct due to the loss of the ecological chain, the underwater biological community disappears, and the self-purification ability of the river channel disappears. Coupled with the joint action of rural domestic sewage and urban sewage, rivers and lakes enter a vicious cycle of black and foul odor

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