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Composite geomembrane for tailings engineering

The composite geomembrane for tailings pond is a geosynthetic barrier composed of high-density polyethylene (HDPE) geomembrane laminated with needle-punched nonwoven geotextile. It is specifically designed for tailings ponds and mining waste containment applications, offering excellent chemical resistance, aging resistance, and mechanical strength to effectively prevent leakage of hazardous substances and protect groundwater and surrounding environments.

Describe

The composite Geomembrane for tailings engineering pond is a geosynthetic barrier composed of high-density polyethylene (HDPE) geomembrane laminated with needle-punched nonwoven geotextile. It is specifically designed for tailings ponds and mining waste containment applications, offering excellent chemical resistance, aging resistance, and mechanical strength to effectively prevent leakage of hazardous substances and protect groundwater and surrounding environments.

Parameter

Parameter Specification
Material   Composition HDPE Geomembrane +   Needle-punched Geotextile
Membrane   Thickness 0.2mm – 2.0mm
Fabric   Weight 100g – 600g/m²
Composite   Layers One textile + one membrane / Two   textiles + one membrane / Multilayer
Width Standard 6 meters, customizable   1m–8m
Length 50m or 100m per roll,   customizable
Tensile   Strength ≥ 18 MPa (adjustable based on   fabric)
Tear   Strength ≥ 80 N
Permeability ≤ 1.0×10⁻¹³ cm/s

Main features

  • High physical and mechanical performance indicators: Including tensile resistance, tear resistance, and burst strength.
  • Excellent product characteristics: High strength, good elongation properties, and large deformation modulus.
  • Outstanding material properties: Acid and alkali resistance, corrosion resistance, aging resistance, and superior impermeability.

Function of composite geomembrane for tailings engineering

  • Enhanced Safety: The composite geomembrane's superior impermeability prevents water seepage from tailings ponds, ensuring structural stability.
  • Environmental Protection: By containing and clarifying process water laden with chemicals, it enables water recycling while preventing pollution.
  • Cost Efficiency: Made of durable polymer materials resistant to extreme temperatures, it's reusable after drying, offering long-term economic benefits.
  • Easy Installation: Simple embedded laying method reduces construction complexity and costs.

Product Applications

Bottom Lining of Tailings Pond: Prevents leachate from seeping into the groundwater.

Seepage Control of Tailings Dam: Enhances slope stability and prevents side leakage of the dam.

Capping of Tailings Waste Heaps: Used for temporary or permanent cover to control rainwater infiltration and reduce leachate generation.

Hazardous Waste Storage Ponds: Applied in storage areas containing heavy metals or chemicals, providing an added layer of environmental protection.

Application scenarios

Composite geomembrane for tailings engineering1

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