info:eu-repo/semantics/article The designed open-pit mine of the Underlying Coal Series (UCS) is specific for the method of tailings excavation, which is performed in very complex geological and technical conditions, since the tailings material above the coal does not have a constant height, and therefore the technological parameters of the excavation are changing by the phases of exploitation. The current way of defense from surface water at open-pit mine UCS has included the drainage of water with perimeter canals, and from the working areas in the mines by level, connecting or transverse canals connected to watercollectors located at the lowest levels of tailings, coal levels and underlying soil. Water from watercollectors is pumped by suitable centrifugal pumps and pipelines to the existing recipients. When talking about the protection of mines from groundwater, in order to provide favorable conditions for the coal exploitation, it was necessary to build drainage facilities to achieve this (drainage wells, drainage ditches, drainage of operation levels eng application/pdf 238296 bytes Рударски гласник CXVII( 1-2) All rights reserved Čanović, Vladan Maksimović, Svetomir Boševski, Trajče Čolaković, Violeta Filipović, Dejan https://unilib.phaidrabg.rs/o:106 underlying coal series, wells, watercollector, canals 2020 Hydrodynamic model of the coal mine Suvodol