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Sand solidification method

A sand-fixing method and desert technology, applied in the field of sand-fixing, can solve the problems of low construction efficiency, unsatisfactory effect, labor-intensive and time-consuming, etc., achieve the effects of reducing sand and dust, realizing large-scale promotion and application, and reducing costs

Inactive Publication Date: 2016-01-27
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

[0029] Example 1 Wind Tunnel Experiments on Sand in the Desert

[0030] Take the sand in the desert as a sample, fill it with 5 plastic discs with a size of Φ20cm×4cm, and smooth it along the upper edge of the disc with a glass rod. Mix 10 parts of vinyl acetate-n-butyl acrylate copolymer emulsion and 90 parts of water evenly, 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 weight of the test samples is 0-4wt%, and the surface integrity rate of the consolidated layer of all samples reaches 92.3%.

Embodiment 2

[0031] Example 2 Field sand fixation and weathering test

[0032] The test area is about 20m 2 , Take 8 parts of vinyl acetate-tert-butyl acrylate emulsion and mix them evenly with 92 parts of water, according to 1kg / m 2 Sprayed on the surface of sand grains, the consolidated layer of the sample remained undamaged for 12 months under various natural conditions in the field. see Figure 4 .

[0033]Adopt vinyl acetate-ethylene-tertiary carbonic acid ethylene ester, vinyl acetate-tertiary carbonic acid ethylene ester-maleic acid ester, vinyl acetate-ethylene-acrylate tertiary copolymer (the vinyl acetate-ethylene- Acrylate terpolymers are vinyl acetate monomer, vinyl monomer and n-butyl acrylate, isobutyl acrylate, isopropyl acrylate, tert-butyl acrylate, cyclohexyl acrylate, allyl acrylate, benzene acrylate methyl ester, octyl acrylate, isooctyl acrylate, hydroxyethyl acrylate or hydroxypropyl acrylate, copolymers of one or more monomers), and vinyl acetate-acrylate binar...

Embodiment 3

[0035] Example 3 Laying desert pavement test

[0036] Due to the small friction between sand grains, walking in the desert is more strenuous than on hard ground. Take 10 parts of vinyl acetate-isopropyl acrylate emulsion and 90 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, and the sand will not collapse.

[0037] Adopt vinyl acetate-ethylene-tertiary carbonic acid ethylene ester, vinyl acetate-tertiary carbonic acid ethylene ester-maleic acid ester, vinyl acetate-ethylene-acrylate tertiary copolymer (the vinyl acetate-ethylene- Acrylate terpolymers are vinyl acetate monomer, vinyl monomer and n-butyl acrylate, isobutyl acrylate, isopropyl acrylate, tert-butyl acrylate, cyclohexyl acrylate, allyl acrylate, benzene acrylate methyl ester, octyl acrylate, isooctyl acrylate, hydroxyethyl acrylate or hydr...

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Abstract

A sand solidification method is disclosed. According to the invention, vinyl acetate-ethene-vinyl versatate, vinyl acetate-vinyl versatate-mleic acid ester, vinyl acetate-acrylate or vinyl acetate-ethene-acrylate is used for sand solidification. The sand solidification method plays a major role in sand prevention and sand solidification, desertification control, sandstorm and wind-sand hazard reduction and control and improvement of sandland and a wide range of the ecological environment and living environment. By the sand solidification method, harm of quicksand to engineering construction in deserts and desert areas is avoided. In addition, the method has a good protective effect on engineering facilities, workers and construction operations. Sand-dust and raised dust that influence air quality can be reduced effectively; content of granules (such as PM2.5) which influence air quality is lowered; air quality is raised; and the ecological environment and living environment are improved.

Description

technical field [0001] The invention relates to a sand-fixing method, in particular to a sand-fixing method using high molecular polymers. Background technique [0002] According to relevant statistics of the United Nations Convention to Combat Desertification, about 1 / 6 of the world's land is desert or desert, and desertification control is a universally recognized worldwide problem. According to the results of the fourth national desertification and sandification monitoring conducted by the Forestry Administration of my country, the desertified land area in my country has reached 2.6237 million square kilometers, and the desertified land area has reached 1.7311 million square kilometers, accounting for 27.33% and 18.03% of the total land area respectively. Especially in northern China, the hazards of sandstorms and sandstorms are becoming more and more serious (see Figure 1a , Figure 1b ), there are nearly 400 million people, more than 50,000 villages, more than 1,300 k...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09K17/20E02D3/12
Inventor 黎园刘白玲刘斌张波罗丽华
Owner CHINA PETROCHEMICAL CORP
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