№82-1
Research of the bearing capacity of rocks when choosing mining and transport equipment for the development of overflows
B. Sobko1,https://orcid.org/0000-0001-9533-5126
Ye. Salnik1 https://orcid.org/0009-0000-7893-9147
1Dnipro University of Technology, Dnipro, Ukraine
Coll.res.pap.nat.min.univ. 2025, 82:7–15
Full text (PDF)
https://doi.org/10.33271/crpnmu/82.007
ABSTRACT
Purpose. Development of a method for selecting mining transport equipment for the development of watered deposits of alluvial titanium-zirconium ores based on the criterion of the bearing capacity of rocks.
The methods. Statistical, analytical, and graph-analytical research methods were used in the work.
Findings. An analysis of the use of mining transport complexes in watered deposits of titanium-zirconium ores with a large capacity of overburden and minerals was conducted. Studies of the bearing capacity of watered rocks of the Motronivka section of the Malyshevka titanium-zirconium alluvial ore deposit were conducted. The possibility of using cyclic mining and transport equipment (walking excavators ESH 10/50 and hydraulic excavators CAT 6018 for the development of water-saturated rocks in the working horizons of the mine has been determined. Based on the studies performed, for the conditions of the Motronivka placer mine, it was established that the location of mining and transport equipment is not allowed at the horizon + 100.0 m due to the low bearing capacity of the Sarmatian sands at this horizon. The operation of the ESH-10/50 excavator is allowed at the horizons +105.0 m and +110.0 m. At the same time, the operation of the CAT 6018 excavator without replacing the undercarriage with a reduced specific pressure of the excavator on the ground is not allowed when developing the Sarmatian sands at the horizons +105.0 m and +110.0 m; and the use of dump trucks without strengthening the base roadbed on the edge of the Sarmatian sands. The results of the study take into account the features of the development of soft rocks by mining and transport equipment complexes in the conditions of the Motronivskyi MPP mine.
The originality. A methodological approach is proposed to determine the bearing capacity of soils in a mine, taking into account its waterlogged horizons.
Practical implementation. The results of the studies allow us to determine the possibility of using mining and transport equipment in the development of waterlogged rocks in horizontal placer deposits.
Keywords: rock, bearing capacity of rocks, mineral deposit, open-pit mining system, mining and transport complex, power shovel, dragline excavator.
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