Sep 22, 2026
Filament geotextile is a nonwoven geosynthetic made from continuous polymer filaments. The filaments are formed into a stable three-dimensional structure through manufacturing processes such as web formation and needle punching.
Unlike a geomembrane, geotextile contains interconnected voids that allow water to pass through the material while retaining soil particles to a certain degree. This makes it useful in mining drainage structures.
A typical drainage section may be arranged as: Tailings or soil → Filament geotextile → Gravel drainage layer → Drainage pipe. In this configuration, the geotextile works mainly as a filter and separator, while the gravel and drainage pipe provide the main water-conveying capacity.
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