Biochar grassed slope structure for coastal reclamation district channel

Abstract

The invention provides a biochar grassed slope structure for a coastal reclamation district channel. The biochar grassed slope structure is composed of a turf protection layer, a biochar soil recovery layer, a straw water guide layer and a crushed stone water draining body from top to bottom. The turf protection layer is fixed through cross-shaped wooden piles. The biochar soil recovery layer is formed by mixing biochar, flue gas desulfurization gypsum and local topsoil, and a good substrate is provided for the growth of turf. The straw water guide layer is manufactured by crushed straw with different lengths, and the lengths of the straw are gradually reduced from top to bottom according to the structure of an inverted filter layer. The crushed stone water draining body is arranged at a slope bottom, residual water collected in the straw water guide layer is removed timely. On one hand, the good carbon collecting function of the biochar can be utilized, the soil salinity and alkalinity of a reclamation district is improved, and sufficient nutrition is provided for the growth of the turf, and a slope surface is protected better by the turf. On the other hand, the water guide layer made of the straw prevents salt from accumulating in deep soil, seepage deformation is avoided through the structure of the inverter filter layer, a side slope is protected, and the overall structural performance and stability of the side slope are effectively enhanced.

Description

technical field [0001] The invention belongs to the technical field of water and soil conservation engineering, and in particular relates to a bio-carbon turf slope protection structure for drainage ditches in coastal reclamation areas. Background technique [0002] The land formation process in my country's coastal reclamation areas is affected by seawater infiltration, and the soil salt accumulation process precedes the soil formation process. The soil is mainly high-sodium salt silt soil. Reasonable irrigation and drainage has become one of the main ways to control saline-alkali land in reclamation areas. However, due to the special nature of the soil in this area, the slopes on both sides of the drainage ditch are severely eroded by the rain and are easy to collapse. At the same time, it is difficult for vegetation to grow on the soil in this area, making it difficult to effectively protect the soil slopes of the drainage ditch. It restricts the realization of the eff...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to aim at the characteristics of high-sodium-salt silt soil in coastal reclamation areas, combining bio-carbon soil improvement technology with turf slope protection technology to construct a bio-carbon turf slope protection structure for drainage ditches in coastal reclamation areas, effectively slowing down the saline-alkali soil in reclamation areas Slope soil erosion, solve the problem of easy instability of gully slopes, and provide necessary conditions for irrigation and drainage improvement of saline-alkali land in coastal reclamation areas

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