Soil improvement device applicable to grassed swale sponge urban infrastructure

Abstract

The invention discloses a soil improvement device applicable to grassed swale sponge urban infrastructure. According to the soil improvement device applicable to the grassed swale sponge urban infrastructure, a water reservoir layer is arranged on a planting layer; a covering layer is arranged on the bottom surface of the water reservoir layer; the bottom of the planting layer is sequentially provided with a microbial layer and a gravel layer from top to bottom; a seepage well is arranged inside the water reservoir layer and sequentially penetrates through the covering layer, the planting layer and the microbial layer, and the seepage well is open at the top end and sealed at the bottom end; the bottom end of the seepage well is provided with an inverted V-shaped overflow baffle, both the upper end and the lower end of the V-shaped overflow baffle are open, and high-concentration soil improvement agent is arranged between the overflow baffle and the seepage well; the side wall of the seepage well is provided with a plurality of diversion pipes which are arranged inside the planting layer and the microbial layer respectively in an downwards inclined mode, and the diversion pipes are provided with seepage holes and wrapped through non-woven fabric; the inside of the gravel layer is provided with drainage blind ducts with side walls provided with water inlet holes, and the drainage blind ducts are wrapped through non-woven fabric and connected to a rainwater pipe. The soil improvement device applicable to the grassed swale sponge urban infrastructure solves the problem of lack of soil nutrients in grassed swales and improves soil permeability.

Description

technical field [0001] The invention relates to a soil improvement device suitable for vegetation shallow ditch sponge city infrastructure. Background technique [0002] With the continuous development of the "sponge city" concept in China, the sponge city infrastructure is gradually applied in engineering practice. The application of facilities with the functions of purifying and utilizing rainwater such as shallow vegetation ditches in road greening can effectively reduce the pollution of rainwater runoff and improve the utilization rate of rainwater. However, since the upper surface of the vegetation shallow ditch planting layer is usually in a state of water storage, the surface soil nutrients are easily lost into the rainwater pipe with the overflow, and a very small amount can reach the plant root system and the lower soil layer. At the same time, the lower soil is in a closed state for a long time, and the air permeability is poor, which can easily cause soil compact...

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Problems solved by technology

[0004] The invention proposes a soil improvement device suitable for the infrastructure of shallow vegetation ditch sponge city, which solves the problem of soil nutrient deficiency in shallow vegetation ditch, improves soil air permeability, avoids soil compaction, and reduces the content of soil pollutants at the same time

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