The Use of Geosynthetics in Mining Works

Authors: Pries, J; Bishop, D; Hayes, S Paper is not available for download Contact Us

DOI https://doi.org/10.36487/ACG_repo/802_5

Cite As:
Pries, J, Bishop, D & Hayes, S 2008, 'The Use of Geosynthetics in Mining Works', in AB Fourie (ed.), Rock Dumps 2008: Proceedings of the First International Seminar on the Management of Rock Dumps, Stockpiles and Heap Leach Pads, Australian Centre for Geomechanics, Perth, pp. 57-64, https://doi.org/10.36487/ACG_repo/802_5



Abstract:
Heap leach facilities are some of the largest man-made fill structures in the world. The design and construction of heap leach facilities have to follow the existing regulations to protect the environment against the very harsh and hazardous conditions. A very important but also critical component in the design, construction and operation of heap leach facilities is the liner system. It has to be designed to guarantee a sufficient quality, in consideration of the long-term responsibility for the environment, as well as in consideration of enhancing solution recovery and therewith operational benefit. Due to the long-term requirements of environmental protection, the surrounding climate and weather conditions in the area of a heap leach facility can lead to the requirement of a capping sealing system upon completion of the mining activities. This paper presents a summary of common heap leach pad designs using geosynthetic components. It shows the design and operation-related requirements for the single components of a heap leach pad lining system (low permeability soil, geomembrane, mineral drainage layer) and the interaction of the layers by project- specific boundary conditions. This paper does not include any design requirements or recommendations for the solution collection piping and the air injecting piping. The authors do not want to introduce themselves as mine experts, but with a large experience in landfill lining systems and geosynthetics.

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