| Parameter | Specification |
|---|---|
| Filtration Structure | Gradient filtration (coarse upper layer + fine lower layer) |
| Anti-Clogging Performance | No clogging after 1000 hours continuous filtration (simulated soil particle test) |
| Drainage Capacity | ≥ 0.25 m³/(m*h) (under 200 kPa pressure, after long-term use) |
| Thickness Range | 6-18 mm |
| Unit Weight | 350-700 g/m² |
| Tensile Strength (Longitudinal/Transverse) | ≥ 25 kN/m |
| Permeability Coefficient | ≥ 8*10⁻⁴ m/s |