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Method for improving urban degraded soil in coastal regions by constructing artificial section

A soil and artificial technology, applied in soil protection, infrastructure engineering, construction, etc., can solve problems such as non-layering, and achieve the effects of reducing human and material resources, being highly targeted, and saving costs.

Inactive Publication Date: 2011-07-27
SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING +1
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Problems solved by technology

[0005] The present invention overcomes the defect of non-layering in the existing urban soil improvement technology, and provides a method for improving urban soil improvement in coastal saline-alkali areas with shallow groundwater levels by constructing artificial profiles to improve urban degraded soil in coastal areas

Method used

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  • Method for improving urban degraded soil in coastal regions by constructing artificial section
  • Method for improving urban degraded soil in coastal regions by constructing artificial section

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Embodiment

[0032] Boron mud is a by-product of boron fertilizer production. It contains a large amount of caustic soda and unextracted available boron. Its pH is about 13 and its effective boron content is about 1-2%. It is an industrial waste. If there is too much boron in the soil, it will cause cause toxic effects. There used to be a deep ditch along Huancheng Road, Jiading District, Shanghai. Later, local residents filled the ditch with boron mud and planted street trees on it. The content is too high, causing a large number of street trees to die, and they still die after repeated replanting; after inspection, the main cause of death is that the boron content in the soil exceeds the plant tolerance threshold.

[0033] Because the whole soil contains a large amount of boron mud, it is necessary to take the method of replacing all the soil in order to completely eradicate the boron mud poisoning. Soil improvement is carried out in the following order:

[0034] (1) Digging tree holes...

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Abstract

The invention discloses a method for improving urban degraded soil in coastal regions by constructing an artificial section, which belongs to the technical field of urban soil improvement and in particular relates to urban degraded soil improvement technology, and urban green space construction and big tree transplant technology. The method is characterized in that: based on a regular soil improvement, the soil structure is improved by simulating a natural soil section; and the method for improving soil by constructing an artificial soil section can be realized by plant pit digging, layered soil packing and post maintenance in sequence. The technology can be used for improving the urban degraded soil, in particular the urban soil in coastal saline-alkaline regions, and can effectively reduce the post soil maintenance cost and has a high popularization value.

Description

technical field [0001] The invention belongs to the technical field of urban soil improvement, specifically relates to the improvement technology of urban degraded soil, the construction of urban green space and the technology of transplanting large trees. Background technique [0002] Urban soil refers to soil that is distributed in parks, roads, stadiums, residential areas, schools, factories, etc., or is simply buried as the "foundation" of urban and industrial facilities such as buildings, streets, and railways. Compared with the agricultural production function of natural soil, urban soil mainly provides carriers for the growth of green plants. It is characterized by the impact of human activities, traffic or urban large-scale infrastructure construction. The soil usually contains a large amount of construction waste, nutrients, etc. The content is relatively low and compacted and compacted; the natural development level of the soil disappears, and the profile structure...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/00E02D3/10A01G23/04
Inventor 郝瑞军张琪王智勇王洪方海兰崔心红
Owner SHANGHAI ACADEMY OF LANDSCAPE ARCHITECTURE SCI & PLANNING
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