The Essence of Material Compatibility in Advanced Barrier Systems of Existing TSFs
Author: V. Govender1, E. Zannoni1
Conference: 8th Asian Conference on Geosynthetics (GeoAsia8)
Date: June 11-13, 2025
1 Knight Piésold, Johannesburg, Gauteng, South Africa
ABSTRACT
Following the implementation of Global Industry Standards for Tailings Management (GISTM) on new and existing Tailing Storage Facilities (TSF) in South Africa, the growing demand for environmental compliance and innovative barrier systems are constantly on the rise. Often, when developing advanced barrier systems for existing facilities, the main challenge emerges from adapting the new system with current site conditions and infrastructure. Therefore, emphasis should be placed on the compatibility and characteristics of surrounding materials, as barrier systems are generally governed by shear interface properties and tailored to suit the underlying subgrade, especially when soil importation is not a feasible option. To gain a better understanding of the material characteristics, various testing techniques are recommended and should be carried out in accordance with the application and function of the materials in the barrier system. Testing should be conducted on the new and existing materials to ensure that the design requirements and technical specifications are not compromised. This paper aims to highlight and present the various types of test methods that were considered in developing a diverse multi-layered barrier system that has been proposed to underlie the buttressing of an existing TSF. Furthermore, the existing drainage systems were overall improved to accommodate the increased catchment area following construction of the buttress.
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