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A geotechnical model is the fundamental basis for the design of an open pit and underground mine. A fully understood and representative geotechnical model will provide information on the engineering characteristics of the rock mass, defining how it is going to behave during mining. The model is composed of individual domains, each comprised of materials exhibiting internally similar geotechnical properties. Defining these domains and fully understanding what is critical to the excavation and the associated risks will enable the mine planners to design the optimal mine.
A geotechnical model that will add value to a mine design should be developed based on a thorough understanding of the 3D geology, structure and, where relevant, alteration and weathering states of the deposit and how these impact the engineering properties. The geotechnical specialist should have a good understanding of the risks and limitations of each individual model and how these will impact on developing the geotechnical domains.
A representative geotechnical model is only as good as the data that is available for the deposit. This paper presents the different types of data used to develop the geotechnical model for the Cukaru Peki deposit and the approach adopted for creating a representative geotechnical model that was used for mine planning.
Keywords: geotechnical data collection, geotechnical model, Cukaru Peki
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