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Author: Admin | 2025-04-28
How to achieve these aims. Some of these objectives clearly require significant geotechnical and hydrogeological input (to quantify levels of safety and stability). However, details on appropriate design acceptance criteria (i.e., what defines acceptably as ‘safe’ and ‘stable’), input data confidence, analysis approaches, and long-term monitoring guidelines are poorly defined and in consequence are often either not applied appropriately or ignored.This new Guideline focuses on the need for clarity on geotechnical and hydrogeological guidelines relating to closure planning, definition of pragmatic objectives and measures of success, implementation and monitoring for open pits and waste dumps for closure, and how these interact with adjacent land uses. The Guidelines will define a state-of-best-practice pathway for closure of pits and dumps that reflects industry-wide experience and considers the perspectives of the operator, regulator and community. These guidelines are aligned with and will augment the following existing mine closure guidelines: APEC (2018), ICMM (2019), World Bank (2021); and although focusing on open pits and dumps, the principles are also aligned with the ICMM (2020a) tailings dam guidelines. Chapters:IntroductionClosure ReimaginedContext, Requirements and Closure ObjectivesClosure PlanningRisk ManagementSite CharacterizationHydrology for Open Pit ClosureOpen Pit Closure Slope DesignsWaste Dump and Stockpiles DesignsClosure ReportingClosure ImplementationPerformance MonitoringCase StudiesTarget audience and outcomes:Geotechnical and hydrogeological practitioners: Reference of industry accepted guidelines on structured methodologies for evaluating and managing geotechnical and hydrogeological open pit closure risks by documenting leading practiceMine Management acquiring: an understanding of geotechnical and hydrogeological open pit closure risks through active closure and relinquishment, strategies to manage these risks, awareness of the limitations of the state-of-the-art, and potential residual risks post-closure and into relinquishment.Mining, Civil and Tailings Engineers and Environmental and Social practitioners require: an appreciation of the recommended geotechnical and hydrogeological workflow, key timing of interactions, and decision points for optimal outcomes, and synergies in approach to open pit
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