Basalt fiber and polyvinyl alcohol combined anti-erosion construction protection method for silt slope

Abstract

The invention provides a basalt fiber and polyvinyl alcohol combined anti-erosion construction protection method for a silt slope, and relates to the technical field of geotechnical engineering slope protection. The invention discloses the three-layer slope anti-erosion protection layer and a design and construction method thereof. The protection layer comprises silt, basalt fibers and modified polyvinyl alcohol mixed soil. A surface protection layer is a common spray-seeding or earth spraying grass planting layer with the thickness ranging from 0.5 cm to 2 cm; a middle protection layer is a mixed layer comprising the silt, basalt fibers and modified polyvinyl alcohol containing a vegetable nutrient solution, the thickness of the mixed layer ranges from 2 cm to 5 cm, and the lengths of the basalt fibers range from 6 mm to 20 mm; a bottom protection layer is a mixed layer comprising the silt and basalt fibers, the thickness of the mixed layer ranges from 5 cm to 15 cm, and the lengths of the basalt fibers range from 20 mm to 30 mm. The method integrates multiple anti-erosion technologies including grass planting, reinforcement and curing agents, mainly aims to eliminate the phenomenon that water and soil loss is prone to occurring on the silt slope under rainfall erosion situations, and has the advantages of being capable of meeting the requirements for low carbon and environment protection, convenient and quick to construct, low in manufacturing cost, and capable of integrating reinforcement, erosion resistance and greening.

Description

technical field [0001] The invention relates to a basalt fiber and polyvinyl alcohol combined anti-scouring slope protection technology and a construction method thereof, belonging to the technical field of geotechnical engineering slope protection. It is mainly aimed at the situation that the silt slope is prone to water and soil loss under the condition of rainfall erosion, which leads to scour damage, especially in the protection of silt embankment slope, the construction is convenient and the combination of greening and scour resistance is more advantageous. Background technique [0002] Scouring damage on the slope surface is one of the most common diseases of silt slopes. The particle size composition of silt is mainly silt and fine sand, with less clay content, so the specific surface area of ​​silt is small and the ion exchange is small. The liquid limit and plasticity index of silt are small, and it is easy to be crushed when it is dry, with large dust, and it is n...

AI Technical Summary

Problems solved by technology

Disadvantages: ①. Traditional curing agents are not conducive to mixed use with plant protection and do not meet green requirements; ②. Ionic curing agents have certain pollution effects and do not meet environmental protection requirements; ③. Organic curing agents have poor effect and high cost

[0004] To sum up, the slope of silty soil subgrade is easily washed by rainwater, and the effect of general protection methods is not ideal

After plant reinforcement protection, the slope surface is still damaged; masonry protection is only suitable for dry slopes, and it is not suitable for areas with large rainfall and frequent changes in dryness and humidity, and the construction is difficult and expensive; and for spraying Soil stabilization and stabilizer grass planting method is either unable to meet environmental protection standards, or the cost is too high to be popularized and applied

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