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Sand stabilizing method

A technology for sand and sedimentary rocks, applied in the field of sand fixation, can solve the problems of unfavorable large-scale promotion, waste of manpower and material resources, poor productivity of sand land, etc., and achieve the effects of low cost, easy operation and simple method of sand fixation.

Active Publication Date: 2013-12-11
陕西地建土地工程技术研究院有限责任公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The use of chemical cements for sand fixation is costly and is not conducive to large-scale promotion; while planting vegetation in deserts is mainly through planting shrubs or aerial seeding afforestation. However, due to strong winds and lack of water in desertified areas, the organic matter in the sand decomposes quickly and accumulates. Relatively few, resulting in poor fertilizer retention, relatively poor nutrients, resulting in poor productivity in sandy land, and the survival rate of vegetation in this harsh environment is not high, wasting a lot of manpower and material resources

Method used

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Examples

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Embodiment 1

[0088] In Dajihan Village, Xiaojihan Township, Yuyang District, Yulin City, the Paleo-Mesozoic sedimentary rocks were collected on site and crushed into particles with a particle size of 3cm to 4cm. The Paleo-Mesozoic sedimentary rocks and sand were fully mixed by means of mechanical rotary tillage to obtain a mixed layer with a volume ratio of Paleo-Mesozoic sedimentary rocks and sand of 1:2 and a thickness of 30 cm. Potatoes were planted on the ground, and 5 quadrats of 1m×1m were selected to conduct a vegetation survey. The average emergence rate reached 80%, while the local unmodified sandy land had an emergence rate of only 20% in the same period; the survey was carried out at the end of July during the flowering period of potatoes , found that the potato coverage in the sandy land reaches 60%, and the potato coverage in the local unmodified sandy land is less than 10%. After investigation, the sandy land in the reformed area does not blow sand in the area after planting....

Embodiment 2

[0090] In Wumaozi Township, Dingbian County, Yulin City, Shaanxi Province, the Paleo-Mesozoic sedimentary rocks were collected on the spot and crushed into particles with a particle size of 2cm to 4cm. The Paleo-Mesozoic sedimentary rock and sand were fully mixed by means of the Paleo-Mesozoic Era sedimentary rock and sand, and the volume ratio of Paleo-Mesozoic sedimentary rock and sand was 1:1.5, and the thickness was 30cm. , selected 5 quadrats of 1m×1m for vegetation group investigation, and the average emergence rate reached 90%, while the local unimproved sandy land had an emergence rate of only 25% in the same period; a group investigation was carried out in August during the vigorous growth period of alfalfa, and it was found that The alfalfa coverage in the sandy land reaches 75%, and the alfalfa coverage in the local unreformed sandy land is less than 40%. After investigation, the sandy land in the transformed area does not blow sand in the area after planting. It can...

Embodiment 3

[0092] In Mengjiawan Village, Mengjiawan Township, Yuyang District, Yulin City, Shaanxi Province, the Paleo-Mesozoic sedimentary rocks were collected on site and crushed into particles with a particle size of 3cm to 4cm. The Paleo-Mesozoic sedimentary rocks and sand were fully mixed by mechanical rotary tillage to obtain a mixed layer with a volume ratio of Paleo-Mesozoic sedimentary rocks and sand of 1:1 and a thickness of 30 cm. The total area of ​​transformation was 2450 mu. Alfalfa was planted in the ground, and its emergence rate and coverage were investigated in different periods respectively, and the same effect as that of Example 2 could be achieved. After investigation, the sandy land in the reformed area does not blow sand in the area after planting. It can be seen from this example that the sandy land transformed by Paleo-Mesozoic sedimentary rocks is more suitable for vegetation growth, with good plant growth and increased vegetation coverage. Therefore, the sand-f...

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Abstract

The invention discloses a sand stabilizing method, comprising the following steps of: smashing paleozoic and mesozoic sedimentary rocks; paving the smashed sedimentary rock on surface of sand, and fully mixing the paleozoic and mesozoic sedimentary rocks and sand to obtain a paleozoic, mesozoic sedimentary rock and sand composite layer with the thickness of 30cm, wherein volume ratio of the paleozoic sedimentary rock to the mesozoic sedimentary rock to sand in the composite layer with the thickness of 30cm is 1:(1-1):5; and planting sand binding plants in the composite layer, thus vegetation coverage is improved and the aim of sand stabilization is achieved. In the sand stabilizing method disclosed by the invention, local materials in a desertification area can be used, sand stabilization cost is low, sand stabilization effect is obvious; a mixed layer of the sedimentary rock and sand has good permeability and water holding characteristic, growing demand of plants can be met, vegetation coverage of desertification zone is effectively increased, ecological environment is improved, and sustainable development is promoted.

Description

technical field [0001] The invention relates to the field of ecological restoration and desert control, in particular to a sand-fixing method. Background technique [0002] At present, the area of ​​desertification in the world has reached a quarter of the total area. According to the survey report of the United Nations, about 60,000 square kilometers of desert will be added every year. In recent years, the area of ​​desertified land in my country has increased from the original 137,000 square kilometers to 176,000 square kilometers. In addition, there are 158,000 square kilometers of land potentially at risk of desertification. The population affected by desertification is more than 5 million people, and nearly 4 million hectares of dry farmland and 5 million hectares of grassland are affected by it. [0003] In terms of desert control, the sand-fixing methods used to curb desertification in my country mainly include vegetation sand-fixation and chemical sand-fixation. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D3/00E02D1/04A01G1/00
Inventor 韩霁昌
Owner 陕西地建土地工程技术研究院有限责任公司