Substantiation of the optimal parameters of the bench elements and slopes of iron ore pits
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- Category: Content №5 2022
- Last Updated on 30 October 2022
- Published on 30 November -0001
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Authors:
B.Yu.Sobko, orcid.org/0000-0002-6872-8458, Dnipro University of Technology, Dnipro, Ukraine, email: This email address is being protected from spambots. You need JavaScript enabled to view it.
O.V.Lozhnikov, orcid.org/0000-0003-1231-0295, Dnipro University of Technology, Dnipro, Ukraine, email: This email address is being protected from spambots. You need JavaScript enabled to view it.
M.O.Chebanov, orcid.org/0000-0002-6681-2701, Dnipro University of Technology, Dnipro, Ukraine, email: This email address is being protected from spambots. You need JavaScript enabled to view it.
D.V.Vinivitin, orcid.org/0000-0001-6911-4194, Ferrexpo Poltava Mining, Horishni Plavni, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu. 2022, (5): 026 - 032
https://doi.org/10.33271/nvngu/2022-5/026
Abstract:
Purpose. To establish the optimal parameters of the bench elements and slopes of the pit at the mining of Horishne-Plavnynske and Lavrykovske deposits of ferruginous quartzites for further use of these parameters at the design.
Methodology. Methods for determining the influence of the bench height on the productive pit capacity involves taking into account the quality of the ore, the rate of the mining front advancement, the rate of pit depth at the mining operations, the total length of the mining front, as well as the angles of the working and non-working pit slops.
Findings. The most effective parameters for mining benches and slopes of an iron ore pit are considered, using the example of the Ferrexpo Poltava Mining. Parameters of the bench elements with a height of 2430 m have been established, which are worked out in layers with a height of 12, 10 and 15 m. The studies carried out made it possible to establish that layers with a height of 10 m, followed by the final and temporary pit contour with a bench height of 30 m, can improve safety due to the flattened slope of the pit up to 45, while, with a bench height of 15 m, the angle of inclination of the slope will be 47.
Originality. The established dependence of the pit ore productivity in percentage on the bench height suggests that with an increase in the bench (layer) height, the ore productivity of the pit decreases. Determination of the influence of the working bench (layer) height on the total volume of ore losses in the design contour of the pit makes it possible to assert that at constant angles of the bench slope and the ore deposit fall, the values of operating losses and clogging change in direct proportion to the height.
Practical value. A technological scheme has been developed for the development of a bench with a height of 30m with a layer thickness of 10 m, which makes it possible to improve safety in the pit by pit slope flattening to 45, to reduce the cost of ore mining by optimizing drilling operations (shorter drilling time per well, reduction of overdrilling and etc.) and thereby improve the economic performance of the enterprise.
Keywords: pit, bench elements, pit slope, bench layers, iron ore, overall pit slopes
References.
1. Gumenik, I., Lozhnikov, O., & Maevskiy, A. (2012). Methodological principles of negative opencast mining influence increasing due to steady development. Geomechanical processes during underground mining. Proceedings of the school of underground mining, (pp. 45-51), Dnipropetrovsk/Yalta, Ukraine, September 24-28. https://doi.org/10.1201/b13157-9.
2. Lutsenko, S., Hryhoriev, Y., Peregudov, V., Kuttybayev, A., & Shampykova, A. (2021). Improving the methods for determining the promising boundaries of iron ore open pits. E3S Web of Conferences, (280). EDP Sciences. https://doi.org/10.1051/e3sconf/202128001005.
3. Azaryan, A.A., Batareyev, O.S., Karamanits, F.I., Kolosov, V.O., & Morkun, V.S. (2018). Ways to reduce ore losses and dilution in iron ore underground mining in Kryvbass.Science and Innovation,14(4), 17-24. https://doi.org/10.15407/scin14.03.018.
4. Anisimov, O., Symonenko, V., Cherniaiev, O., & Shustov, O. (2018). Formation of safety conditions for development of deposits by open mining. E3S Web of Conferences, (60), 00016. EDP Sciences. 11 P. https://doi.org/10.1051/e3sconf/20186000016.
5. Mai, N. L., Topal, E., Erten, O., & Sommerville, B. (2019). A new risk-based optimisation method for the iron ore production scheduling using stochastic integer programming. Resources Policy, 62, 571-579. https://doi.org/10.1016/j.resourpol.2018.11.004.
6. Maleki, M., Jlvez, E., Emery, X., & Morales, N. (2020). Stochastic open-pit mine production scheduling: a case study of an iron deposit. Minerals, 10(7), 585. https://doi.org/10.3390/min10070585.
7. Cherniaiev, O., Pavlychenko, A., Romanenko, O., & Vovk, Y. (2021). Substantiation of resource-saving technology when mining the deposits for the production of crushed-stone products. Mining of Mineral Deposits, 15(4), 99-107. https://doi.org/10.33271/MINING15.04.099.
8. Kuzmenko, S., Kaluzhnyi, Ye., Moldabayev, S., Shustov, O., Adamchuk, A., & Toktarov, A. (2019). Optimization of position of the cyclical-and-continuous method complexes when cleaning-up the deep iron ore quarries. Mining of Mineral Deposits, 13(3), 104-112. https://doi.org/10.33271/mining13.03.104.
9. Sobko, B., Lozhnikov, O., Levytskyi, V., & Skyba, G. (2019). Conceptual development of the transition from drill and blast excavation to non-blasting methods for the preparation of mined rock in surface mining. The Mining-Geology-Petroleum Engineering Bulletin, 21-28. https://doi.org/10.17794/rgn.2019.3.3.
10. McQuillan, A., Yacoub, T., Bar, N., Coli, N., Leoni, L., Rea, S., & Bu, J. (2020, May). Three-dimensional slope stability modelling and its interoperability with interferometric radar data to improve geotechnical design. Slope Stability 2020: Proceedings of the 2020 International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, 1349-1358. https://doi.org/10.36487/ACG_repo/2025_92.
11. Purhamadani, E., Bagherpour, R., & Tudeshki, H. (2021). Energy consumption in open-pit mining operations relying on reduced energy consumption for haulage using in-pit crusher systems. Journal of Cleaner Production, 291, 125228, 497-504. https://doi.org/10.1016/j.jclepro.2020.125228.
12. Dychkovskyi, R., Tabachenko, M., Zhadiaieva, K., & Cabana, E. (2019). Some aspects of modern vision for geoenergy usage. E3S Web of Conferences, 123, 01010. https://doi.org/10.1051/e3sconf/201912301010.
13. Stupnik, M., & Shatokha, V. (2021). History and Current State of Mining in the Kryvyi Rih Iron Ore Deposit. In Shatokha, V. (Ed.). Iron Ores. IntechOpen, (pp. 1-16). https://doi.org/10.5772/intechopen.96120.
14. Sobko, B., Drebenstedt, C., & Lozhnikov, O. (2017). Selection of environmentally safe open-pit technology for mining water-bearing deposits. Mining of Mineral Deposits, 11, 70-75. https://doi.org/10.15407/mining11.03.070.
15. Kolesnyk, V., Pavlychenko, A., Borysovska, O., Buchavyi, Yu., & Kulikova, D. (2020). Justification of the method of dust emissions localization on mobile crushing and sorting complexes of quarries with the use of air-and-water ejectors. E3S Web of Conferences, 168, 00029. https://doi.org/10.1051/e3sconf/202016800029.
16. Sinha, S. K., & Choudhary, B. S. (2020). Pit Optimization for Improved NPV and Life of Mine in Heterogeneous Iron Ore Deposit. Journal of The Institution of Engineers (India): Series D, 101(2), 253-264. https://doi.org/10.1007/s40033-020-00236-z.
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