Ecological protection bank suitable for plateau frozen earth

Abstract

The invention relates to an ecological protection bank suitable for plateau frozen earth and belongs to the field of ecological restoration. The ecological protection bank comprises geocells, mixed fillers and fixing grass seeds. The geocells are bi-directional geocells and are made of polystyrene heat preservation materials, the surface is widened, it is beneficial to utilization of intensive ultraviolet rays on the plateau, and heat preservation performance is improved; the mixed fillers are formed by mixing plant-generated soil, humus, macromolecule conditioning agents, cement and plant fibers in a certain proportion, can provide a good environment for growth of plants and microorganisms and meanwhile can retain water and soil, and anti-scouring capacity and anti-freezing-thawing capacity of the ecological protection bank are effectively improved; and the fixing grass seeds are selected from cool-resistant, anti-freezing-thawing and anti-infertility cool-season type grass seeds suitable for extensive management. By means of the ecological protection bank, defects of ecological protection banks in flat areas are overcome, extreme conditions in the highly-cold high-altitude areas can be resisted, the ecological protection bank is resistant to intensive ultraviolet rays, hydraulic scouring and freezing and thawing actions, low in cost and free of secondary pollution, and it is beneficial to maintenance of the ecological environment in the three river source water source regions.

Description

technical field [0001] The invention relates to an ecological revetment suitable for plateau frozen soil, belonging to the field of ecological restoration. Background technique [0002] Permafrost refers to various rocks and soils below zero degrees Celsius and containing ice. Generally, it can be divided into short-term frozen soil (several hours / days to half a month), seasonal frozen soil (half a month to several months) and permafrost (also known as permafrost, which refers to the frozen soil that lasts for two years or more. unmelted soil). Frozen soil has rheological properties, and its long-term strength is much lower than the instantaneous strength. As the temperature in the permafrost region changes positively and negatively periodically, the water in the permafrost layer undergoes phase change and migration correspondingly, resulting in rock destruction, sediments are sorted and disturbed, and the permafrost layer deforms, resulting in frost heave, A series of co...

AI Technical Summary

Problems solved by technology

[0006] The traditional bank revetment is poured with concrete, which can only play the function of flood drainage, but does not take into account the landscape function of the river, causing serious damage to the original natural environment and ecological system

The ecological bank revetment technology that emerged at the historic moment has solved this problem well, but the existing ecological bank revetment technology is only suitable for plain areas, and does not have the functions of anti-freezing and thawing, anti-ultraviolet rays, etc. in plateau permafrost areas, and cannot protect the environment. protection of river ecology, therefore, it is necessary to propose an ecological revetment suitable for plateau permafrost regions

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