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A platform for research: civil engineering, architecture and urbanism
Improved slope stability for lined heap leach pads
The design stability analyses fur construction of loosely placed ore heap fills are typically conservative for safe operations and do not consider the increase in fill and liner strength with time in operations. The operational conditions for the fully drained granular ore fill materials include wetting and consolidation under controlled ore lift placement and leaching operations. The slope stability summary results show the most critical safety factors occur at the start-up of operations during the initial ore lift placement. The heap stability increases with continued ore lift placement, assuming stable foundation conditions beneath the heap fill and liner system. The overall increase in the ore heap dope stability for the idealized study section from design to final operations shows about a 20 % increase in the safety factor at the maximum heap height for closure. The long-term dope stability of high fills on geomembrane liner systems for closure is anticipated to increase with time, assuming the slopes are protected from erosion and the heap fill remains fully drained an a stable underlying foundation. The stability analyses summary results for an idealized study section are in general agreement with the historic performance of high fills on geomembrane liner systems.
Improved slope stability for lined heap leach pads
The design stability analyses fur construction of loosely placed ore heap fills are typically conservative for safe operations and do not consider the increase in fill and liner strength with time in operations. The operational conditions for the fully drained granular ore fill materials include wetting and consolidation under controlled ore lift placement and leaching operations. The slope stability summary results show the most critical safety factors occur at the start-up of operations during the initial ore lift placement. The heap stability increases with continued ore lift placement, assuming stable foundation conditions beneath the heap fill and liner system. The overall increase in the ore heap dope stability for the idealized study section from design to final operations shows about a 20 % increase in the safety factor at the maximum heap height for closure. The long-term dope stability of high fills on geomembrane liner systems for closure is anticipated to increase with time, assuming the slopes are protected from erosion and the heap fill remains fully drained an a stable underlying foundation. The stability analyses summary results for an idealized study section are in general agreement with the historic performance of high fills on geomembrane liner systems.
Improved slope stability for lined heap leach pads
Verbesserte Böschungsfestigkeit für abgedichtete Erzlagerstätten
Breitenbach, A.J. (author)
2004
8 Seiten, 8 Bilder, 2 Tabellen, 12 Quellen
Article (Journal)
English
Liner system design for heap leach pads
| Online Contents | 2010
Liner system design for heap leach pads
| Elsevier | 2009
| British Library Conference Proceedings | 2008