Method for windbreak and sand fixation

A technology for windproof sand fixation and quicksand, applied in chemical instruments and methods, soil protection, application, etc., can solve the problems of low construction efficiency, unsatisfactory effect, labor and time consuming, etc., to reduce sand and dust and achieve large-scale The effect of promoting applications and reducing costs

Active Publication Date: 2015-12-16
CHINA PETROCHEMICAL CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, grass grids and sand control grids rely on manual construction for sand fixation, which is labor-intensive and time-consuming, with low construction efficiency and unsatisfactory results.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Example 1 Wind Tunnel Experiments on Sand in the Desert

[0018] Take the sand in the desert as a sample, fill it with 15 plastic discs with a size of Φ20cm×4cm, and smooth it along the upper edge of the disc with a glass rod. Mix 3 parts of polyvinyl alcohol, vinyl acetate-ethylene, and polyvinyl acetate emulsion with 97 parts of water respectively, according to 1kg / m 2 The dosage is sprayed on the sand surface, dried and put into the wind tunnel. Take the blowing erosion angles as 0°, 15°, and 30° respectively, and blow and etch for 10 minutes at a wind speed of 15-16m / s. The wind erosion weights of the test samples were 0-2wt%, 1-3wt%, 1-4wt%, and the surface integrity rates of the consolidated layers of all the samples were 97.5%, 94.8%, and 93.7%, respectively.

Embodiment 2

[0019] Example 2 Field sand fixation and weathering test

[0020] The test area is about 20m 2 , Take 6 parts of polyvinyl acetate emulsion, polyvinyl alcohol, vinyl acetate-ethylene and 94 parts of water and mix evenly, according to 1kg / m 2 Sprayed on the surface of sand grains, the consolidated layer of the sample remained undamaged for 3 months under various natural conditions in the field.

[0021] By embodiment 1, 2 results, it can be seen that the polyvinyl acetate emulsion used in the present invention, polyvinyl alcohol, vinyl acetate-ethylene and sand grains, sandy soil etc. have good adhesion, consolidation, film-forming property, permeability , so that the sand and sand are connected together to form a continuous and a certain strength consolidation layer, thereby preventing the sand from moving and improving the wind resistance. Visible, sand fixing method of the present invention has remarkable effect.

Embodiment 3

[0022] Example 3 Laying desert pavement test

[0023] Due to the small friction between sand grains, walking in the desert is more strenuous than on hard ground. Take 8 parts of polyvinyl acetate emulsion, polyvinyl alcohol, vinyl acetate-ethylene and 92 parts of water and mix evenly, according to 2kg / m 2 The dosage is sprayed on the sand surface of a certain desert in northern my country to form a sidewalk. After natural drying and hardening, adults can walk freely on it without any subsidence of the sand.

[0024] The test results show that polyvinyl acetate emulsion, polyvinyl alcohol, and vinyl acetate-ethylene have good adhesion to sand particles, have good permeability in the sand layer, and can bond and solidify sand particles of a certain thickness. A cured layer with a certain strength is formed to bear a certain weight.

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PUM

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Abstract

The invention provides a method for windbreak and sand fixation. Polyvinyl acetate, polyvinyl alcohol or vinyl acetate-ethylene is utilized for realizing sand fixation. The method of the invention performs a great function on sand treatment and fixation, desertification control, sandstorm damage reduction and control, and improvement of an ecological environment and human settlement environment in the sand area and a wider area. The method for windbreak and sand fixation further has advantages of preventing damage of quick sand in project construction at desert and wilderness areas; performing a good protective function on engineering facility, personnel and construction operation; effectively reducing sand dust and fugitive dust which reduce air quality, reducing content of small particles (such as PM2.5) which reduce the air quality, improving air quality, and improving the ecological environment and the human settlement environment.

Description

technical field [0001] The invention relates to a method for windbreak and sand fixation, in particular to a method for sand fixation using a high molecular polymer. Background technique [0002] Land desertification and the hazards of sandstorms have become the confidant of the Chinese nation. They are major ecological environmental protection issues and social livelihood issues. They seriously threaten the national ecological security and seriously restrict the sustainable development of the social economy. At present, countries all over the world are actively carrying out the work of sand prevention and fixation and desertification prevention and control. For many years, sand control and sand fixation methods have been mainly adopted at home and abroad: first, physical sand fixation, such as grass grid sand fixation, sand control grid sand fixation; second, plant sand fixation, such as planting sandy area plants and shelter forests by ordinary methods; Chemical sand fixa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02D3/12C09K17/20
Inventor 刘白玲刘斌罗荣黎园张波
Owner CHINA PETROCHEMICAL CORP
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