Lozhnikov O. Technological bases of the mineral raw materials complex use at the flooded placer deposits mining

The thesis for a scientific degree of the Doctor in Technical Sciences in specialty 05.15.03 – Surface mining. – Dnipro University of Technology, Dnipro, 2021. The thesis is devoted to a substantiation of methodological approaches to complex development of mineral raw materials at the flooded placer deposits surface mining and establishment of dependences between elements of mining systems at the development of new technologies taking into account economic, technological and environmental factors. Researches on establishment of influence the technology of mineral raw materials complex use on indicators of pit haulage work, parameters of disturbed pit lands use, formation of man-caused deposits from accompany raw materials of containing minerals are carried out. For the first time, the dependences of the mancaused deposits parameters on their location in the inner pit dump have been established. The influence of the accompany raw materials share on the investment attractiveness of the placer deposit development is determined. The results of the obtained researches allowed to substantiate the efficiency of the proposed complex mining technology of the flooded placer deposits.