A framework for evaluating deep sea mining systems for seafloor ma ssive sul phides deposits

Abstract

Loki’s Castle, a SMS site of interest located in the Norwegian jurisdiction, was used to illustrate the established framework. The established economic block model was used to support a sensitivity analysis which shows the performance of the DSM system as being the most influential parameter over the value of a deposit. The results of the simulation framework showed the significant variability of a DSM system’s output and related mining costs when confronted to adverse weather conditions. The simulation framework also supported a sensitivity study which shows that the vertical transportation system and the ability to perform logistic operations at sea are central to the value created by a DSM system. Using the conceptual design framework and the results of the simulation framework, four DSM system concepts are proposed for Loki’s Castle. The results of the framework are discussed in the light of strategic mine planning, artificial intelligence techniques for optimisation purpose and advanced design methodologies. Based on the findings of the discussion, future works are presented under the form of a proposal for a pilot project to orientate the efforts of the several disciplines which constitute DSM engineering.