![]() The research results in determining the influence of underwater mining of overburden rocks and ore by dredger for decreasing the water level and its subsequent recovery in the reservoir of the Motronivskyi MCP pit, allow to develop a mode of mining operations without an external source of water supply. ![]() It has been proved that the dredger work in the conditions of the Motronivskyi MCP pit is possible without external source of water supply. The methods have been developed for calculating the underground water inflow into the pit reservoir, when mining the placer ores by hydromechanization equipment. It has been generalized the world experience of determining the groundwater inflows into mine workings, which are mined by means of hydromechanization equipment. ![]() * Corresponding author: research aims to increase the performance efficiency of hydromechanization equipment under the conditions of pit operation of the Motronivskyi Mining and Concentrating Plant by determining the dynamics of change in the water level in the mine workings when developing the overburden rocks and mineral. Borys Sobko 1, Anatolii Haidin 2, Oleksii Lozhnikov 3 * and Jacek Jarosz 4ġ Motronivskyi Mining Processing Plant, 30-A Molodizhna St., 51700 Vilnohirsk, UkraineĢ Limited Liability Company “GIRHIMPROM”, 98 Stryiska St., 79026 Lviv, Ukraineģ Dnipro University of Technology, Department of Surface Mining, 19 Yavornytskoho Ave., 49005 Dnipro, UkraineĤ Mineral and Energy Economy Research Institute of the Polish Academy of Sciences, Division of Mineral Resource Acquisition, 7 Wybickiego St., 31-261 Krakow, Poland
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