HDPE geomembrane selection for a tailings facility begins with the containment duty—not thickness alone. Review the stored liquid or slurry, subgrade, slopes, cover system, exposure period, settlement, welding access and required verification documents as one lining system.
Define the technical problem
Confirm the floor and slope geometry, contained medium, exposed or covered condition, drainage, leakage-detection and protective layers. Different areas may require different surface and detailing decisions.
Selection method
Smooth HDPE is commonly considered for relatively flat areas where added interface interaction is not specified. Textured HDPE may be selected on slopes or layered systems where higher interface interaction is required. Use project-specific interface testing where specified.
Parameter checklist
- Resin, density and carbon-black dispersion
- Thickness and uniformity
- Tensile, tear and puncture properties
- Stress-crack and oxidation resistance where specified
- Textured asperity and interface test
- Roll dimensions and panel layout
- Applicable GB, ASTM, GRI or project methods
Installation controls
Prepare a stable subgrade, plan panels and anchors, control wrinkles and ballast, and keep seam surfaces clean and dry. Trial seams, production seam logs, non-destructive tests, destructive samples, repairs and as-built records should follow the approved quality plan.
Products and case
Compare smooth HDPE geomembrane and textured HDPE geomembrane, then review the South Africa tailings case.
Frequently asked questions
Is thicker geomembrane always better?
No. Resin quality, puncture protection, interface behavior and seam quality are also critical.
When is textured liner considered?
On interfaces where the approved design requires increased interaction.
Make tailings-liner offers comparable
Use the same drawing and specification revision for each offer. Record the project's requirements separately from the supplier's proposed supply and evidence.
Scope and quantities
- Project requirement
- Provide the site, drawing revision, floor and slope areas, quantity basis and intended delivery location.
- Supplier confirmation
- Request an itemized offer that maps proposed rolls and quantities to that scope and identifies exclusions.
Medium and service conditions
- Project requirement
- Provide the contained medium, chemistry, temperature, exposure and adjacent materials stated by the design team.
- Supplier confirmation
- Request the proposed grade, supporting compatibility evidence and any missing information; leave suitability unresolved until reviewed.
Specified material and verification
- Project requirement
- Provide the designer's thickness, surface, test methods and editions, required values and quality plan.
- Supplier confirmation
- Request matching data sheets, applicable reports, batch traceability and an explicit list of deviations.
Installation and handover responsibilities
- Project requirement
- Identify who supplies, installs, welds, tests and reviews the work, with the required records and schedule.
- Supplier confirmation
- Ask the offer to separate material supply from site services, and confirm packing, delivery basis and documentation.
Keep requirements, responses and open items together
Download the blank tailings-liner inquiry matrix (CSV)
Blank inquiry aid only. Missing requirements and deviations remain open for the project's design team. It is not a liner design, an acceptance record or a compliance certificate.
Prepare the supporting technical records
Prepare a tailings-liner inquiry
Send the layout, slope, medium, exposure condition, standard, quantity, destination and required records.