№62-04
Substantiation parameters of man-caused deposit in pit internal dumpat the placer deposits surface mining
O. Lozhnikov1, R. Dychkovskyi1
1Dnipro University of Technology, Dnipro, Ukraine
Coll.res.pap.nat.min.univ. 2020, 62:39-52
https://doi.org/10.33271/crpnmu/62.039
Full text (PDF)
ABSTRACT
Purpose. Justification of the effective parameters of man-caused deposits located on the territory of pit internal dumps at the development of alluvial placer deposits.
Research methodology. The analytical research method was used to establish the main parameters of man-caused deposits such as internal and external dumps, taking into account their height and volume. During the determination of the effective number of man-caused deposits in the development of placer deposits, a graphical research method was used.
The results. It was confirmed that with an increasing of the man-caused deposits number for storing associated raw materials from 1 to 10, the total area for their placement will increase by 5 – 8.5% depending on the height, while the volume of haulage work will decrease by 4 times. The established parameters of man-caused deposits during the development of placer deposits allow to assert that the efficient number of storage sites for associated raw materials of the host rocks of the ore is 3 man-caused deposits with their height from 10 to 20 m.
Scientific novelty. The influence of the height of a man-caused deposit on its area and length was established when potential raw materials are placed in the internal dump of the pit. The dependence of the areas of individual man-caused deposits with the location of associated minerals of the deposit in different parts of the pit field has been established. The influence of the number of man-caused deposits locations on the weighted average volume of mining and haulage work during the operation of the pit has been determined.
Practical value. The efficient number of storage sites for associated raw materials during the development of a placer deposit has been determined. A method has been developed for determining the parameters of individual man-caused deposits and their total area during the pit operation. The volumes of mining and haulage work have been established during the formation of a different number of man-caused deposits in the internal dump of the pit.
Key words: surface mining, pit, man-caused deposit, dump, volume of mining and haulage work, accompany raw materials
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