How to correctly select and use filament geotextile to prevent soil erosion?

Filament geotextile is a kind of geosynthetic material that can be used to prevent soil erosion. It has the advantages of water permeability, air permeability, filterability and tear resistance. How to correctly choose and use filament geotextile can effectively reduce soil erosion and protect land resources. Below are suggestions for the selection and use of filament geotextiles.

（1）Correctly choose the specifications and types of filament geotextile

1. Specification selection: Select the appropriate filament geotextile specifications according to the degree of soil erosion, land use and erosion resistance requirements.

 Generally speaking, the greater the gravity unit area (g/m2) of the geotextile, the better the corrosion resistance, but the corresponding price will be higher.

2. Type selection: Select the appropriate filament geotextile type according to specific project requirements and site conditions. Common filament geotextile types include

 non-woven fabrics, needle-punched non-woven fabrics and hot-melt non-woven fabrics. Among them, non-woven fabrics are suitable for soil conservation and anti-gully erosion

 projects; needle-punched non-woven fabrics are suitable for high-fill soil slopes; hot-melt non-woven fabrics are suitable for high-fill soil slopes, soil and water conservation, and

 foundation pit protection.

（2）Correct method of laying filament geotextile

1. Preparation: Before laying the filament geotextile, first remove weeds, tree roots and other debris on the site, and level the site. Determine the start and end points for laying

 the geotextile, then cut the geotextile to the appropriate size as needed.

2. Laying the geotextile: Completely unfold the filament geotextile, level it, and then fix it on the site with vertical poles or fixtures. Fixing methods can use buckles, vertical poles,

 wire hooks or ground nails. When fixing the filament geotextile, it is necessary to ensure that the tension between the fixing points is uniform to prevent looseness or excessive

 tightness.

3. Joint processing: When multiple pieces of filament geotextile need to be used, it is necessary to leave an overlap between two adjacent pieces of fabric, usually 20-30cm, and

 then use nails or other fixtures to fix them on the ground. In order to ensure the strength of the joint and prevent soil erosion, a layer of geotextile can be used to cover it.

4. Edge treatment: In order to increase the stability and sealing of the filament geotextile, reinforcement measures, such as reinforcement tapes, plant roots, etc., can be used at

 the edges of the geotextile. Reinforcement tape can be used to enhance the bond between geotextile and soil and reduce the possibility of soil erosion.

（3）Regularly inspect and maintain filament geotextile

1. Inspection: Regularly check the fixation of the filament geotextile. If it is loose, damaged or deformed, repair or replace it in time.

2. Cleaning: During use, filament geotextiles will accumulate some sediment, weeds and other debris. Regular cleaning of these debris can maintain the permeability and water

 permeability of the geotextile and extend its service life.

3. Maintenance: Strengthen the protection of lawns, flowers and other vegetation around the filament geotextile to avoid human damage and mechanical wear, and at the same

 time, it can also improve the soil's resistance to erosion.

In summary, the correct selection and use of filament geotextiles can effectively reduce soil erosion and protect land resources. When selecting filament geotextiles, it is

 necessary to select the appropriate specifications and types according to specific project requirements and site conditions. When laying filament geotextiles, attention should be

 paid to preparations, fixing methods, joint treatment, and edge treatment. Regular inspection and maintenance of filament geotextile can extend its service life and improve its

 ability to resist erosion.