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Method for building artificial ecological island through river and lake silt

An artificial ecology and silt technology, applied in artificial islands, water conservancy projects, chemical instruments and methods, etc., can solve the problems of artificial islands such as poor firmness and erosion resistance, poor environmental compatibility, river and lake silt outlets, etc., and achieve good erosion resistance capacity, reduce high cost problems, and avoid pollution of rivers and lakes

Active Publication Date: 2017-06-30
INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI +1
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  • Abstract
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AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method for constructing artificial ecological islands by using river and lake silt. In the prior art, artificial ecological islands are filled with huge volume of earth and rocks, high cost, poor environmental compatibility, easy to cause environmental pollution, and the artificial islands are relatively stable and resistant to erosion. Poor, the technical problem of the river and lake silt in the city center
[0006] The present invention provides a method for constructing an artificial ecological island by using river and lake silt, which solves the problem of the huge amount of earth and stone filling, high cost, poor environmental compatibility, easy to cause environmental pollution, and the firmness and erosion resistance of the artificial ecological island in the prior art. poor technical issues

Method used

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Embodiment Construction

[0032] The embodiment of the present application provides a method of using river and lake silt to build an artificial ecological island, which solves the problem of the huge amount of earth and stone filling, high cost, poor environmental compatibility, easy to cause environmental pollution, and the stability of the artificial island in the prior art. The technical problem of relatively poor corrosion resistance; the technical effect of improving the environmental compatibility, reliability and economy of the artificial island has been achieved.

[0033] In order to solve the above technical problems, the general idea of ​​the technical solution provided by the embodiment of the present application is as follows:

[0034] Use the raw mud of rivers and lakes as materials, screen and modify it to build artificial islands, reduce foreign transport of building materials, thereby reducing a series of problems such as high cost, heavy pollution and poor environmental tolerance; at t...

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Abstract

The invention belongs to the technical field of environmental geotechnics and discloses a method for building an artificial ecological island through river and lake silt. The method for building the artificial ecological island through the river and lake silt includes the steps that cofferdam steel plates are arranged along the design boundary line of the artificial ecological island; river and lake desilting is carried out, and the river and lake silt is obtained; large-particle solid materials such as gravel in the river and lake silt are screened out, and mixed slurry is formed by adding modifying agents into screened slurry; modified mud cakes are formed by dehydrating the mixed slurry; a gravel layer is formed by backfilling a cofferdam with the large-particle solid materials such as the gravel in a paving mode, and water in the cofferdam is discharged; a gravel cushion layer is formed by conducting in-situ solidification treatment on the gravel layer in the cofferdam; the modified mud cakes are piled on the solidified gravel cushion layer in a filling mode; and revetment bricks are used for building a slope in the position, above the gravel cushion layer, of an island body. The filling method for the artificial ecological island has small pollution to the river and lake environment, high adaptability, erosion resistance and high structural reliability.

Description

technical field [0001] The invention relates to the technical field of environmental geotechnical engineering, in particular to a method for constructing an artificial ecological island using river and lake silt. Background technique [0002] In order to improve the water quality of rivers and lakes, ensure the normal flood discharge capacity of rivers and the smooth flow of inland waterways, large-scale dredging and dredging projects are carried out every year in our country, resulting in a large amount of dredging silt. Dredged silt has the engineering characteristics of high water content, high compressibility, low strength, and low permeability, and some of the silt also contains pollutants such as heavy metals, so it is difficult to be directly used as engineering materials. [0003] Sludge modification is an effective way of resource utilization, that is, by adding modified materials to the sludge to change the shape, size and physical and mechanical properties of the ...

Claims

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Application Information

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IPC IPC(8): E02B17/00C02F11/02C02F3/34
CPCC02F3/34C02F11/02C02F2103/007E02B17/00
Inventor 薛强陈亿军万勇王士权钟锋
Owner INST OF ROCK AND SOIL MECHANICS - CHINESE ACAD OF SCI
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