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FEM analysis of saline creep behavior over time

The case study is a potash ore deposit located in the Spanish Ebro Basin; it is configured by 8 salt lithologies separated by layers of clays. Saline materials have a characteristic called Creep, which is the flow capacity once an underground excavation is opened. This flow can be fast enough to present a safety hazard for the miners and an operational issue due to the cross-section reduction of the drift or even its collapse. Different variables including temperature or pressure influence directly the creep evolution. In recent years, the mining infrastructure of this case study is reaching considerable depths, such as opening underground excavations at more than 900 meters depth. Therefore, it is crucial to control the creep evolution over time. The ore deposit was studied technical as