Filament geotextile is a high-strength, corrosion-resistant geosynthetic material primarily used for isolation, filtration, drainage, reinforcement, and protection in engineering projects.
一. Core Functions and Application Fields
Leveraging its unique material properties (such as high tensile strength, chemical resistance, and good water permeability), filament geotextile plays a crucial role in the following engineering sectors:
1. Transportation Infrastructure
Ⅰ. Road Engineering
Acts as an isolation layer between subgrade and soft soil to prevent material intermixing.
Enhances pavement crack resistance and delays reflective cracking.
Ⅱ. Railways/Airport Runways
Reinforces subgrade to improve load-bearing stability.
Used for isolation and drainage between ballast and subgrade.
2. Water Conservancy Projects
Ⅰ. Dams and Slope Protection
Serves as a filtration layer to allow water flow while preventing soil erosion.
Utilized in anti-seepage structures (e.g., when combined with geomembranes).
Ⅱ. Drainage Systems
Constructs drainage channels within tunnels and dam bodies to reduce hydrostatic pressure.
3. Environmental Protection and Erosion Control
Ⅰ. Landfills
Isolates pollutants and protects geomembranes from puncture.
Ⅱ. Coastal/Riverbank Protection
Dissipates hydraulic stress to prevent scouring and erosion.
4. Other Applications
Ⅰ. Agriculture
Covers soil to reduce erosion and improve water retention.
Ⅱ. Urban Infrastructure
Used in sponge city rainwater management or reinforcement of underground projects.
二. Material Properties Supporting Applications
Ⅰ. High Strength and Durability
Polyester filament structure withstands significant tensile forces, suitable for permanent engineering projects.
Ⅱ. Balanced Permeability and Filtration
Mesh structure allows water passage while retaining soil particles, maintaining soil stability.
Ⅲ. Chemical Stability
Resistant to acid and alkali corrosion, ideal for complex environments (e.g., chemical waste landfills).
