What Role Do Geobags Play in Slope Protection Projects?

The geobag is made of polypropylene (PP) or polyester fiber (PET) as the raw material of double-sided ironing needled non-woven processing of the bag. The thickness, unit mass, physical and mechanical properties, shape, fiber type, stress mode, direction, geometric size, water permeability and equivalent pore size for plant growth of the anti-ultraviolet geobag were strictly screened. It has the characteristics of anti-ultraviolet (UV), anti-aging, non-toxic, non-combustion, crack does not extend, and truly realizes zero pollution. Mainly used in the construction of flexible ecological slope. Geobag slope protection greening is one of the important construction methods in barren mountain, mine restoration, highway slope greening, riverbank slope protection and inland river regulation.

As the latest type of slope component material, it has the following environmental universality advantages:

Strong weather resistance: The ecological bag is made of high-strength anti-UV anti-aging materials, which can resist the erosion of ultraviolet light, freeze-thaw, acid and alkali natural environment for a long time. Long service life, up to 30 years of non-degradation, no pollution to the environment.

Excellent physical properties: with high tear resistance, tensile strength, bursting strength and other characteristics, can withstand greater external force and pressure. Permeable and impervious to soil, it can ensure the water needed by plant roots and prevent soil loss.

Good chemical stability: it is not affected by chemicals in the soil, and will not undergo qualitative change or decay. Resistant to acid, alkali and salt erosion and microbial decomposition, to ensure the long-term use of the ecological bag.

Strong water and soil conservation ability: in high mountains, steep slopes and desertification areas, the geobag can be used to protect slopes, restore vegetation and prevent soil erosion. Strengthen slope stability to prevent soil erosion and soil erosion.

The construction is simple and quick: the construction of the ecological bag is convenient, and it can be cut, stitched and spliced at will to adapt to various complex terrain. Mechanized construction can be used to improve construction efficiency and shorten the construction period.

Low maintenance cost: The ecological bag material has strong durability and long service life, which reduces the maintenance frequency and cost. After the vegetation is restored, the geobag is integrated with the soil to form a natural and stable ecosystem.

It can be classified according to different materials：

Polypropylene geobag(PP geobag) : It made of polypropylene staple fiber processing, with higher tearing strength, tensile strength and bursting strength, but the degree of softness and refinement is not as good as filament geobag.

Filament ecological bag: The use of polyester filament fiber processing, with anti-ultraviolet, anti-aging, tensile, corrosion resistance, acid and alkali resistance and other functions, water permeability and soil permeability performance index is good, soft material, can be built at any multi-angle.

The use of ecological bags in slope protection projects mainly includes the following steps:

Prepare the ecological bags: Select the ecological bags with reliable quality and in line with the requirements of the project, and ensure that the bags have the filter function of water permeability and soil permeability.

Fill the soil: Fill the geobag with a mixture of soil and nutrients, making sure the filling is tight and even.

Stack the geobags: Stack the geobags layer by layer along the slope surface to ensure that the bags are tightly connected to form a stable slope protection structure.

Fixed geobag: The use of three-dimensional drainage connection buckle, geogrille and ecological anchor and other components to fix the geobagon the slope to enhance the integrity and stability of the slope protection system.

Greening construction: Greening construction is carried out on the surface of the ecological bag, such as manual planting grass, spraying greening, planting shrubs, etc., to promote the re-growth of vegetation and play a role in restoring the ecological environment.