Green desert ground surface windproof structure

A desert and surface technology, applied in infrastructure engineering, soil protection, application, etc., can solve the problems of difficulty, slow effect, low plant survival rate, etc., and achieve the effect of short treatment period, simple operation and high survival rate

Active Publication Date: 2017-05-31
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But the simple planting of trees is very difficult, the depth of plant burial is very large, the survival rate of plants is very low, the effect is slow, and a lot of manpower and material resources are required.
Sand barriers and grass grids are effective quickly, but the investment is relatively large, and it is difficult to use them on a large scale
There are also new methods of soil surface crusting technology, including chemical, physical and biological crusts. Pure phy...

Method used

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  • Green desert ground surface windproof structure
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  • Green desert ground surface windproof structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] In this embodiment, covering a windproof layer on the desert surface includes the following steps:

[0064] The first step is to prepare the microbial anti-seepage reinforcement solution: use Sarcina Pastoris with the preservation number of CGMCCNo.1.3687 to multiply and culture, and the microorganisms, calcium nitrate, sodium chloride, and urea that have grown to the logarithmic phase according to the concentration Microorganism 10 8 A / L, urea 1.5mol / L, calcium ion 1.5mol / L, sodium chloride 9g / L mixed in the aqueous solution;

[0065] The second step is to select a desert with coarse-grained sand and use the microbial anti-seepage reinforcement solution to treat the desert surface for 3 times. The spray amount of the microbial anti-seepage reinforcement solution for each treatment is 3L / m 2 , After spraying, cover a layer of covering layer, such as black geotextile, straw mat, etc., remove the covering layer 72h after the last spraying to form a windproof layer.

Embodiment 2

[0067] In this embodiment, covering a windproof layer on the desert surface includes the following steps:

[0068] The first step is to prepare the microbial anti-seepage reinforcement solution: use Bacillus geourea with the preservation number of CGMCC No.1.7272 for multiplication and culture, and the microorganisms, calcium chloride and urea that grow to the logarithmic phase will be microbial 10 7 A / L, 0.3mol / L of urea and 0.3mol / L of calcium ion are mixed in the aqueous solution;

[0069] The second step is to select a desert with coarse-grained sandy soil and treat the surface of the desert with the microbial anti-seepage reinforcement solution. The treatment is performed once, and the spray amount of the microbial anti-seepage reinforcement solution for each treatment is 1L / m 2 , After spraying, cover a layer of covering layer, such as black geotextile, straw mat, etc., 80h after the last spray, remove the covering layer to form a windproof layer.

Embodiment 3

[0071] In this embodiment, covering a windproof layer on the desert surface includes the following steps:

[0072] The first step is to prepare the microbial anti-seepage reinforcement solution: use Sarcina Pastoris with the preservation number CGMCC No.1.3687 for multiplication and culture, and the microorganisms, calcium acetate, sodium chloride, and urea that have grown to the logarithmic phase according to the concentration Microbe 10 9 A / L, urea 3mol / L, calcium ion 3mol / L and sodium chloride 15g / L mixed in the aqueous solution;

[0073] The second step is to select a desert with coarse-grained sand and use the microbial anti-seepage reinforcement solution to treat the desert surface for 5 times. The spray amount of the microbial anti-seepage reinforcement solution for each treatment is 5L / m 2 , After spraying, cover a layer of covering layer, such as black geotextile, straw mat, etc., remove the covering layer 72h after the last spraying to form a windproof layer.

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Abstract

The invention discloses a green desert ground surface windproof structure. A windproof layer covers the desert ground surface, and the windproof layer is obtained through microorganism seepage-proofing and strengthening fluid treatment; the content of sandy soil in desert with the particle size being 0.075-60 mm is larger than 50%, and microorganisms in strengthening fluid are aerobiotic type bacteria; or the content of sandy soil in desert with the particle size being smaller than or equal to 0.075 is larger than or equal to 50%, the microorganisms in strengthening fluid are facultative anaerobic bacteria, and the windproof layer cannot be blown and scattered at the maximum wind speed of 20 m/s. The microorganism reaction process depended by the green desert ground surface windproof structure is the process existing in the soil ecological environment, and the environment cannot be polluted; a microorganism-plant combined sand treatment technology is adopted, and the survival rate is higher compared with pure planting of plants; the green desert ground surface windproof structure mainly depends on the biocement technology, the effect is high in speed compared with biological crust generated by utilizing other bacteria, fungi, blue-green algae and the like, and basically no requirement exists for the environment.

Description

Technical field [0001] The invention relates to a desert structure, in particular to a green desert surface windproof structure, belonging to the technical field of desert management. Background technique [0002] Desertification is a worldwide ecological and environmental problem. According to incomplete statistics, deserts and desertified lands account for 55% of Africa, 19% for North America and Central America, 10% for South America, 34% for Asia, 75% for Australia, and 2% for Europe. The land area of ​​desertification in China is 2.622 million square kilometers, accounting for 27.4% of the country's land area. Nearly 400 million people are affected by desertification. At the same time, the direct economic loss caused by desertification is 120 billion yuan every year. [0003] At present, scholars' research on desertification is mainly focused on land desertification. Commonly used methods for desert management include plant afforestation, sand barriers, and grass grids. How...

Claims

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Application Information

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IPC IPC(8): E02D3/12E02D3/00C09K17/40C09K17/52C09K105/00
CPCC09K17/40C09K17/52C09K2105/00E02D3/00E02D3/12Y02A40/22
Inventor 高玉峰何稼王丽亚
Owner HOHAI UNIV
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