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This study deals with the environment protection of mining areas affected by flooding and waterlogging in Western Donbas. We used finite difference numerical modelling to analyse the hydrogeological regime of mining sites as complex geotechnical systems being transformed under the multifactorial influence and parameter uncertainty. The developed ground water flow model of the most waterabundant mine in Ukraine named after N.I. Stashkov has been validated using the available data on chronological stages of mining. This enabled to identify the patterns of temporal and spatial changes of flow parameters, the locations of high transmissivity zones in rocks and balance water flows in carboniferous and shallow aquifers. Using the model we assessed the hydrodynamic conditions expected after closing and flooding the mine, particularly, the risks of near-by mine operation and environmental consequences to the ground surface. The groundwater level rebound is expected to take three years with emerging the zones of potential flooding and waterlogging in the Samara River floodplain. We compared four options of environmental engineering protection including the installation of stationary or submersible pumps in the mining horizon used for drainage, with evaluating the cost-effectiveness and anticipated environmental effect. The alternative option has been recommended to

OPTIMIZATION OF ENVIRONMENTAL ENGINEERING PROTECTION AND WATER RESOURCE USE AT THE MOST WATERED MINE IN UKRAINE