1. Protect HDPE Geomembrane Ssheet from Damage: CBR bursting strength ≥3.5kN disperses concentrated stress of ore and reduces the risk of HDPE membrane puncture by >90%.
2. Synergistic Geogrid/cell: Composite Biaxial Geogrid (tensile strength ≥40kN/m) improves overall shear strength by 25%; filling Geocell (height 200mm) reduces settlement by 50%.
3. Friction-enhanced Anti-slip: Combined with HDPE Textured Geomembrane, the interface friction angle is ≥30°, meeting the 1:1.5 steep slope anti-slip safety factor FS>1.5.
4. Fast Construction and Time Saving: Roll width 5–8m (Geotextile Wholesale standard product), laying efficiency ≥2000m²/day.
Introduction
PET Non Woven Geotextile Fabric for Mining is a water-permeable synthetic fiber material made by mechanical entanglement, thermal bonding or chemical bonding process without traditional textile weaving process. In civil engineering (especially mining anti-seepage system), it mainly undertakes the functions of filtration, isolation, drainage and protection of the core anti-seepage layer (such as HDPE geomembrane). Polyester Geotextile Fabric or polypropylene Nonwoven Geotextile forms a three-dimensional permeable structure through needle punching process, which is an indispensable filtration-isolation-protection layer in the mining liner system. As a key product of Geotextile Manufacturer, its performance directly affects the long-term safety of tailings ponds and heap leaching sites.
The Core Role of Non-Woven Geotextile Fabric in the Anti-seepage System of Mining Industry
Polyester Geotextile Fabric or Nonwoven Geotextile made of polypropylene forms a three-dimensional permeable structure through needle punching process, which is an indispensable filtration-isolation-protection layer in the mining liner system. As a key product of Geotextile Manufacturer, its performance directly affects the long-term safety of tailings ponds and heap leaching fields.
1. Application in Tailing Ponds: Composite Liner Structure
Filtration: Apparent pore size O₉₀=0.1mm (ASTM D4751) blocks fine-grained tailings, and the permeability coefficient ≥0.2cm/s (ASTM D4491) quickly drains water to prevent pore water pressure from damaging the dam body.
Protection: CBR bursting strength ≥3.5kN (ASTM D6241) buffers the sharp edges of tailings and prevents the HDPE geomembrane below from puncturing and failing.
Synergistic materials:
Slope reinforcement requires Geogrid to enhance anti-slip force (friction angle increased by 15°~25°).
Geocell is used to fill gravel in weak foundation areas to disperse settlement stress.
 |  |
2. Application in heap leach pads: acid diversion and membrane protection system:
Chemical corrosion resistance: Polyester material tolerates pH 1~12 leachate (ISO 12960) and has a service life of >50 years.
Stress dispersion: Tensile strength ≥12kN/m (ASTM D4632) evenly transmits >200kPa ore load to prevent local deformation of HDPE membrane.
 |  |
Synergistic Application with Geogrid/Geocell
1. Geogrid reinforces steep slopes:
Tails pond >30° slopes are laid with bidirectional polyester Geogrid (ultimate tensile strength ≥40kN/m), which is combined with non-woven geotextiles to increase the overall shear strength by >30%.
2. Geocell stabilizes foundations:
HDPE Geocell (weld strength ≥1.5kN) is used for soft foundations in heap leaching sites, and Geotextile Cloth is laid after filling with gravel, reducing the settlement rate by 50%.
 |  |
Non Woven Geotextile Fabric for Mining Core Physical Parameter Indicators and Engineering Requirements
1. Physical Properties:
Parameters | Mining Standard Scopes | Test Standards | Remarks |
Weight per Unit Area | 400-800g/㎡ | ISO 9864 | Tailings pond ≥500; heap leaching field ≥400 (high load area needs to be thickened) |
Thickness (@2kPa) | 3.0-6.0mm | ASTM D5199 | Provide buffer layer space to protect HDPE film |
Densiity | 1.38g/cm³(PET) | AStm D792 | Polyester (PET) is more acid-resistant than polypropylene (PP) |
2. Mechanical Properties:
Parameters | Mining Requirements | Test Standards | Remarks |
Tensile Strength | ≥12kN/m (vertical/horizontal) | ASTM D4632 | Resist ore pile load (leaching field ≥ 200kPa) |
Elongation at Break | 50-100% | ASTM D4632 | Adapt to foundation deformation and prevent brittle cracking |
CBR Bursting Strength | ≥3.5kN | ASTM D6241 | Core indicators: prevent sharp tailings particles from piercing the HDPE membrane (tailings pond mandatory ≥ 3.5kN) |
Trapezoidal Tear Strength | ≥500N | ASTM D4533 | Resist construction machinery damage |
3. Hydraulic Performance:
Parameters | Mining Requirements | Test Standards | Remarks |
Apparent Open Pore Size (O₉₀) | 0.07-0.15mm | ASTM D4751 | Tailings pond: ≤0.10mm (blocking fine particles) heap leaching field: ≤0.15mm (fast acid-conducting liquid) |
Vertical Permeability | ≥0.15cm/s | ASTM D4491 | Ensure rapid drainage of leachate/pore water (≥0.2cm/s when slope >30°) |
Porosity | ≥85% | ASTM D4751 | Maintain long-term water permeability and prevent clogging |
4. Durability & Environmental Resistance:
Parameters | Mining Requirements | Test Standards | Remarks |
UV Intensity Retention Rate (500hrs) | ≥80% | ASTM D4355 | Protection during the exposed construction period (needs carbon black addition) |
Acid & Alkali Resistance (pH) | 2-12 | ISO 12960 | Heap leaching site: resistant to pH=0.8 sulfuric acid solution; tailings pond: resistant to pH=12 alkali solution |
Antioxidant | ≥90% Strength Retention (1000hrs) | GRI GT7 | Prevent metal ion catalytic degradation |
Non Woven Geotextile Selection Guide for Mining
Parameters | Tailings Pond Requiremtns | Leaching Site Requirements | Test Standard |
Weight per Unit Area | ≥500 g/m² | ≥400 g/m² | ISO 9864 |
CBR Bursting Strength | ≥3.5 kN | ≥2.8 kN | ASTM D6241 |
Vertical Permeability | ≥0.15 cm/s | ≥0.10 cm/s | ASTM D4491 |
UV Aging Retention | ≥80% (500hr) | ≥75% (500hr) | ASTM D4355 |
Haoyang’s PET Non Woven Geotextile Fabric for Mining
As a leading geotextile manufacturer and bulk geotextile supplier since 2008, Haoyang Environmental Technology ( Shandong ) Co., Ltd. produces heavy-duty nonwoven geotextile fabrics from UV-stabilized polyester, engineered specifically for mining heap leach pads, tailings dams, and access roads with 800 N puncture resistance and 40% elongation to withstand rock fragmentation and acidic leachate, available for geotextile wholesale in 6m wide rolls with express global logistics enabling clients to buy geotextile online for remote mine sites while supporting hybrid reinforcement systems with geogrid or geocell composites—request instant quotes for our 600 g/m² geotextile cloth proven in Chilean copper operations under extreme abrasion.
 |  |
 |  |
Q&A: Shipping, Factory & Product Information
Q: Shipping Options & Times?
A: Methods: DHL/FedEx/UPS (Express), Ocean Freight (Bulk), or Your Freight Forwarder. Costs: Vary by weight/size/destination/method – get a quote. Times: Express: ~3-15 work days; Ocean: ~20-45+ days.
Q: Factory Address?
A: Located in Dezhou City, Shandong, China (near Jinan), with easy access. Visitors welcome! Find exact address in company details.
Q: Warranty Offered?
A: Yes - 12 months standard on manufacturing defects. See product details or contact us for specifics.
Q: Samples Available?
A: Yes, and recommended! Test quality, specs & fit before bulk order. Contact Sales for sample & shipping costs.
