Hydrodynamic model recalibration: Case study of the Drmno open cast coal mine

Protection of open cast mines from groundwater is a complex problem in hydrogeology. Characteristic of these mines is the constant expansion, viewed in plan and in depth, from the very beginning of ore exploitation until the end of ore exploitation. Due to such circumstances, the whole process requires constant adaptation to new conditions during lignite exploitation, which also requires constant upgrading of hydrodynamic models, which represent the basic methodology for creating a successful drainage plan and protection of the ore deposit from groundwater. The paper presents the recalibration of the basic model of the Drmno open cast mine. In this research area, the creation of hydrodynamic models, i.e. their upgrading, has been carried out for almost a quarter of a century.