3626 Learnings from Development of an Underground Sub-Level Open Stope Mine below an Open Pit
DOI:
https://doi.org/10.17159/Abstract
This paper presents the lessons learnt during the transition from an Open Pit Method to a Sub-Level Open Stoping (SLOS) Method within the same Koidu Limited kimberlite pipe. These learnings may assist other mines with planning, both from a practical implementation perspective (layout, charging up challenges), a method for estimating potential dilution and stability challenges associated with the interaction between the surface and underground excavations. Predictive geotechnical stability modelling was successfully applied to highlight potential failure zones, which allowed modification and enhancement of the mining layouts and quantification of the potential dilution of the kimberlite from indicative instabilities.
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Copyright (c) 2025 Kevin Byron Le Bron, Miles, Rocco
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