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Key facts
Composite liner with chemical-resistant selection based on tailings-water analysis: HDPE base and textured dam slopes (1.5–2.5 mm), GCL auxiliary barrier, drainage layers and polypropylene filters in alkaline media.
Configuration must be confirmed by project design documentsMaterial Configuration by Layer
| Layer | Recommended material | Function / rationale |
|---|---|---|
| Primary liner (base) | Smooth HDPE 1.5–2.5 mm | Main containment |
| Primary liner (dam) | Textured HDPE | Slope interface stability |
| Auxiliary barrier | GCL or compacted clay | Redundancy |
| Filtration | PP geotextile in alkaline media | Resists hydrolysis |
| Monitoring | Drainage layers + monitoring wells | Early leak detection |
| Note: configurations are common practice; the final system and specifications must follow the project design documents and governing codes. | ||
Products Used in This System
Frequently Asked Questions
How is chemical resistance handled?
Tailings-water pH, metals and reagents are analysed first; membrane grade is verified for stress-crack resistance and OIT, and PP (not PET) geotextile is used where the medium is alkaline.
Project enquiry | Tailings Impoundment Lining
Send the project type, site conditions, design requirements and quantities to receive a project-specific configuration and quotation.