Ecological slope protection method based on sludge solidification soil
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A technology of ecological slope protection and solidified soil, which is applied in the field of ecological slope protection and ecological slope protection based on silt solidified soil, which can solve the problems of secondary pollution of soil and groundwater, high moisture content, space occupation, etc., and meet the needs of vegetation, high strength, and structure stable effect
Active Publication Date: 2016-09-28
HOHAI UNIV
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Problems solved by technology
A large amount of dredged sludge is produced every year, with high moisture content, low strength, and poor stability. If it is not disposed of
Method used
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Embodiment 1
[0048] (1) Compact the slope surface and the bottom of the slope and repair it to make it level, keep the slope basically the same, and spread a layer of fine sand with a thickness of about 3cm;
[0049] (2) Mix and stir the dredged bottom mud and the A component of the additional material evenly, and fill it into a vegetable bag with a length of 1.2m and a width of 0.5m. The A component is composed of dredging silt, fly ash, gypsum, organic fertilizer and soil It is made by mixing and stirring improved mineral materials, among which fly ash, gypsum, organic fertilizer and mineral materials account for 15%, 4%, 1% and 8% of the mixed mass respectively; the mineral materials are vermiculite powder, zeolite powder and expansive pearls rock, the mass ratio is 2:1:1;
[0050] (3) Seal the filled vegetation bag and extrude it flat, measure and set off the line, place it in a stepped structure along the bottom of the slope to the slope surface layer by layer, lay 5 layers, and sow t...
Embodiment 2
[0064] (1) Compact the slope surface and the bottom of the slope and repair it to make it level, keep the slope basically the same, and spread a layer of fine sand with a thickness of about 3cm;
[0065] (2) Mix and stir the dredged bottom mud and the A component of the additional material evenly, and fill it into a vegetable bag with a length of 1.2m and a width of 0.5m. The A component is composed of dredging silt, fly ash, gypsum, organic fertilizer and soil The improved mineral materials are mixed and stirred, wherein the mass percentages of fly ash, gypsum, organic fertilizer and mineral materials are 20%, 3%, 3% and 4% respectively. The mineral materials are vermiculite powder, zeolite powder and expanded perlite, the mass ratio is 2:1:1;
[0066] (3) Seal the filled planting bag and squeeze it flat, measure and set off the line, layer by layer interlaced in a ladder structure and place it at the bottom of the slope protection slope, lay 5 layers, and sow tall fescue see...
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Abstract
The invention discloses an ecological slope protection method based on sludge solidification soil. The ecological slope protection method comprises the following steps that a slope surface to be treated and a slope bottom to be treated are compacted and repaired to be level, and then a fine sand layer is laid on the slope surface; dredging sludge and a material A are mixed and stirred evenly and are contained in vegetation bags in a filling manner; the vegetation bags are arranged in multiple layers from the slope bottom to the slope surface, and plants are planted in the vegetation bags on the topmost layer; a ridge foundation pit is dug below the slope surface; a form board is laid in the foundation pit along the edge, dredging sludge and a material B are mixed and stirred evenly and are poured into the form board, the form board is removed after the mixed material is hardened to form hard ridges, and cells are formed between clearances of the ridges; porous vegetation concrete is laid in the cells; holes of the porous vegetation concrete are filled with vegetation matrixes, and the porous vegetation concrete is covered with new soil; and plants are planted, and natural maintenance is carried out. According to the method, the dredging sludge is solidified to serve as a slope protection material, the dredging sludge is effectively consumed, the greening effect is good, soil fixing and slope protection are further achieved, the vegetation need can be met, and the good ecological effect is achieved.
Description
technical field [0001] The invention relates to an ecological slope protection method, in particular to an ecological slope protection method based on silt solidified soil, and belongs to the technical field of environmental application materials. Background technique [0002] Urban rivers, lakes or tidal flats need to be dredged and dredged regularly to ensure the self-purification and repair ability of water bodies and the convenience of shipping and transportation. A large amount of dredged silt is produced every year, with high moisture content, low strength and poor stability. If it is not disposed of effectively, it will take up a lot of space, and the harmful pollutants contained in it will cause secondary pollution to soil and groundwater. [0003] Sludge solidification is one of the effective resource utilization methods for sludge at present. Chemical solidification is the use of various solidification materials to react with the particle components inside the slu...
Claims
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Application Information
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