Fast-storage and slow-release sponge embankment structure of urban small watershed

Abstract

The invention discloses an urban small watershed watercourse quick storage and slow release sponge embankment structure. The urban small watershed watercourse quick storage and slow release sponge embankment structure comprises an embankment wall composed of an embankment bottom plate and an embankment panel, wherein the interior of the embankment wall is sequentially filled with a coarse sand layer and a gravel layer in vibrating compaction mode, a plurality of communication pipelines are arranged in the embankment bottom plate at intervals in penetration mode, a small pore reversed filter bag is arranged on the embankment bottom plate, a plurality of flood discharge pipelines are arranged in the middle of the embankment panel at intervals in penetration mode, a macro pore reversed filter bag is arranged in the middle of the embankment panel, a gravel and coarse sand cushion layer is arranged below the embankment bottom plate, and dry laid stone guard feet are laid on the outer side of the gravel and coarse sand cushion layer and the outer side of the embankment bottom plate. The urban small watershed watercourse quick storage and slow release sponge embankment structure enables the embankment wall to have a water storage function by being filled with padding high in void ratio, and exchanges water with a watercourse water body through the communication pipelines so as to achieve a water body storage release, and simultaneously due to the fact that the flood discharge pipelines can massively and rapidly guide flood above the warning water level into the embankment wall and store the flood, a flood peak reduction purpose is achieved, the water stored in the embankment wall can slowly seep into a watercourse through the communication pipelines, and water replenishing for the watercourse is achieved.

Description

technical field [0001] The invention relates to the technical field of river embankment facilities, in particular to an embankment structure with the function of regulating and storing river rain and flood. Background technique [0002] At present, most of the known river embankments are masonry embankments, reinforced concrete embankments, etc. The retaining structure is formed by concrete and masonry to isolate the river from the back of the embankment to ensure the safety and stability of the embankment and improve the space utilization rate. The connection between groundwater and river water is poor. In addition, the backfill behind the retaining wall is mostly made of cohesive soil, which has poor permeability and the embankment lacks the ability to regulate and store. Requirements, while the river embankment is directly facing the water, it can be said to be an important area for constructing a sponge city. [0003] In the past 30 years, with the rapid advancement of ...

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Problems solved by technology

[0002] At present, most of the known river embankments are masonry embankments, reinforced concrete embankments, etc. The retaining structure is formed by concrete and masonry to isolate the river channel from the back of the embankment, so as to ensure the safety and stability of the embankment and improve the space utilization rate. The connection between groundwater and river water is poor. In addition, the backfill behind the retaining wall is mostly made of cohesive soil, which has poor permeability and the embankment lacks the ability to regulate and store. requirements, and the river embankment is directly facing the water, which can be said to be an important area for constructing a sponge city

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