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Mine Waste Storage Facility Liner Design and Testing : A Case Study from the Cerro Corona Mine

Tailings and Mine Waste Conference (2023 : Vancouver, B.C.); University of British Columbia. Norman B. Keevil Institute of Mining Engineering

This paper presents a case study of Waste Storage Facilities (WSFs), which include a composite liner system placed in a shingle configuration to manage seepage and mitigate stability impacts. The composite liner system consists of a textured high-density polyethylene (HDPE) geomembrane with an underlying clay layer and overlying sand layer. Engineering literature includes limited information on geomembrane interface shear strengths under high normal loads. To support the WSFs designs, a liner interface shear strength testing program was performed using the direct shear apparatus. The program included testing to verify the interface shear strength parameters selected for design, evaluating interface shear strengths at high normal loads (up to 3,200 kPa), and evaluating the impacts of the various testing conditions on interface shear strength. This paper presents the results of the laboratory testing, a discussion on the impacts of loading conditions on interface shear strength, and a discussion on various regression techniques used to verify residual shear strengths.

Text

2023-12-08

Attribution-NonCommercialNoDerivatives 4.0 International

http://hdl.handle.net/2429/86800

Unreviewed

http://creativecommons.org/licenses/by-nc-nd/4.0/