A Diverse Approach in Geosynthetic Barrier Systems to Ensure Environmental Compliance of Existing TSFs
Authors: V. Govender1, E. Zannoni2, M. Germishuys2
Conference: GIGSA Workshop and GCYP
Date: July 4-5, 2024
1 Knight Piésold, Sandton, South Africa
2 Knight Piésold, Pretoria, South Africa
ABSTRACT
Following the publication and implementation of Global Industry Standards for Tailings Management (GISTM), on new and existing Tailing Storage Facilities (TSF), the growing demand for environmental compliance and innovative barrier systems are constantly on the rise. This paper aims to present the design considerations and challenges of a diverse multi-layered barrier system that has been proposed to underlie the buttressing of an existing TSF. The design for the barrier system follows the waste classification of the tailings – Type 1 and slag – Type 3, of which the slag material will be used to construct the buttress surrounding the TSF. Given the site topography and geology, various tests were conducted along with advanced stability modelling, to render a safe and suitable design. As part of the barrier design requirements, consideration was further given to improve the existing drainage systems on site, to accommodate the increased catchment area following construction of the buttress.
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