Silty and fine sand slope protection method based on geonets and sand plants

Abstract

The invention relates to a silty and fine sand slope protection method based on geonets and sand plants. Straw checkerboard barriers and planted and laid pebble slope protection are commonly adopted by wind-drift-sand roadbed slope protection to fix sand, however, the straw checkerboard barriers are short in service life, and the building and maintaining cost of the planted and laid pebble slope protection is high. According to the method, the geonets are laid on silty and fine sand slopes for earlier-stage mechanical sand fixing, and protection types of the laid geonets are selected from the following modes that a layer of CE131 geonet is directly laid on a silty and fine sand slope for protection; a screen window net is firstly laid on a silty and fine sand slope, and then a layer of CE152 geonet is laid in a pressing mode; a geonet mat is laid on a silty and fine sand slope; and the sand plants are planted on a silty and fine sand slope which is mechanically reinforced in advance, namely shrubs and herbaceous plants are combined. According to the method, the geonets are used as auxiliary materials for earlier-stage protection of the silty and fine sand slopes and protection of plant growth, and the method is not limited by natural conditions and has the advantages that material transportation is convenient, the construction speed is high, the labor intensity is reduced, and repairing and maintaining are convenient.

Description

technical field [0001] The invention relates to a protection method for fine sand slopes, in particular to a protection method for fine sand slopes based on geotechnical nets and psammophytes. Background technique [0002] In the slope protection projects of wind-sand subgrades such as railways and highways, grass grid sand barriers and planted pebble slope protection are generally used to fix sand. If the surface is not loose and damaged, it needs to invest a lot of maintenance costs and labor every year. [0003] Plants, as one of the important measures of windbreak and sand fixation, play an irreplaceable role by other methods, but are strictly limited by many natural conditions, such as seasons, precipitation, natural water content of strata, sand surface stability and so on. [0004] In the distribution area of ​​mobile sand dunes in arid deserts, using grass grid sand barriers and sand-fixing plants to control sand can achieve good results, but in arid and windy sand...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a protection method for silt and fine sand slopes based on geonetwork and psammophytes, which overcomes the defects of slow construction speed of slope protection by planting pebbles, frequent cleaning of sand deposits, difficult maintenance and slow biological measures

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