Determination of drilling and blasting parameters considering the stress-strain state of rock ores
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- Category: Development of fields
- Last Updated on Wednesday, 20 March 2019 14:34
- Published on Friday, 08 March 2019 09:55
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Authors:
M.B.Fedko, Cand. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0003-4169-7425, State Institution of Higher Education “Kryvyi Rih National University”, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
I.O.Muzyka, Cand. Sc. (Tech.), orcid.org/0000-0002-9202-2973, State Institution of Higher Education “Kryvyi Rih National University”, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
S.V.Pysmennyi, Cand. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0001-5384-6972, State Institution of Higher Education “Kryvyi Rih National University”, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
O.V.Kalinichenko, Cand. Sc. (Есоn.), Assoc. Prof., orcid.org/0000-0002-9138-9271, State Institution of Higher Education “Kryvyi Rih National University”, Kryvyi Rih, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Abstract:
Purpose. Enhancing methods for determining parameters of drilling and blasting operations considering the stress-strain state of rocks.
Methodology. Dependency of the inclined exposure dip on the stress-strain state of rocks to be caved is determined by the analytical research technique and mathematical modeling applying the finite element method.
Findings. The work offers methods for determining the energy intensity factor for breaking ores onto the inclined exposure which considers the exposure dip while correcting drilling and blasting parameters. There are also offered calculated numerical limits for the above factor.
Originality. The scientific novelty consists in determining numerical values of the energy intensity factor for breaking the rock massif considering its stress-strain state when caving onto an inclined exposure (compensation area)taking into account its dip. The work suggests limiting the range of obtained numerical values of the factor when breaking the massif onto any type of exposures.
Practical value. Drilling and blasting parameters can be corrected depending on changes of the ore massif stress-strain state when caving it onto any type of exposures (horizontal, vertical or inclined). The dedicated computer program created enables immediate acquisition of basic drilling and blasting parameters for particular conditions and analysis of predicted values of fragmentation of the massif to be caved.
References.
1. Khomenko, O., Kononenko, M. and Myronova, I., 2013. Blasting works technology to decrease an emission of harmful matters into the mine atmosphere. In: Annual Scientific-Technical Colletion – Mining of Mineral Deposits, pp. 231–235.
2. Fedko, M. B., Kolosov, V. A., Pismennyi, S. V. and Kalinichenko, Ye. V., 2014. Economic aspects of change-over to TNT-free explosives for the purposes of ore underground mining in Kryvyi Rih basin. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 4, pp. 79–84.
3. Stupnik, N. and Kalinichenko, V., 2012. Parameters of shear zone and methods of their conditions control at underground mining of steep-dipping iron ore deposits in Kryvyi Rig basin. In: Geomechanical Processes During Underground Mining – Proceedings of the School of Underground Mining, pp. 15–19.
4. Khomenko, O. and Maltsev, D., 2013. Laboratory research of influence of face area dimensions on the state of uranium ore layers being broken. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 2, pp. 31‒37.
5. Rymarchuk, B. I., Shepel, O. L. and Khudyk, M. V., 2017. Expediency of application of the vertical concentrated charges to decrease losses of ore on a lying wall of deposits. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 3 pp. 32–37.
6. Khomenko, О., Kononenko, M. and Myronova, I., 2017. Ecological and technological aspects of iron-ore underground mining. Mining of Mineral Deposits, 2(11), pp. 59–67.
7. Kononenko, M. N., Petlevany, M. V. and Zubko, S. A., 2015. Formation of stress fields in a bookmarking array around the chambers with increasing depth of mining operations. In: Mining of mineral deposits: annual scientific-technical collection, pp. 207–215.
8. Stupnik, N., Kalinichenko, V. and Pismennyi, S., 2013. Pillars sizing at magnetite quartzites room-work. In: Annual Scientific-Technical Colletion – Mining of Mineral Deposits, pp. 11–15.
9. Stupnik, N., Kalinichenko, V., Kolosov, V., Pismennyi, S. and Shepel, A., 2014. Modeling of stopes in soft ores during ore mining theme. Metallurgical and mining industry, 3, pp. 32–36.
10. Plevako, V., Potapov, V., Kycenko, V., Lebedynecj, I. and Pedorych, I., 2016. Analytical study of the bending of isotropic plates, inhomogeneous in thickness. Eastern-European Journal of Enterprise Technologies, 4(7(82)), pp. 10–16.
11. Stupnik, N. and Kalinichenko, V., 2013. Magnetite quartzite mining is the future of Kryvyi Rig iron ore basin. In: Annual Scientific-Technical Colletion ‒ Mining of Mineral Deposits, pp. 49–52.
12. Morkun, V., Morkun, N. and Tron, V., 2015. Formalization and frequency analysis of robust control of ore beneficiation technological processes under parametric uncertainty. Metallurgical and Mining Industry, 5, pp. 7–11.
13. Kononenko, M., Khomenko, O., Sudakov, A., Drobot, S. and Lkhagva, Ts., 2016. Numerical modelling of massif zonal structuring around underground working. Mining of Mineral Deposits, 12(3), рр. 101‒106.
14. Morkun, V., Morkun, N. and Pikilnyak, A., 2014. Simulation of high-energy ultrasound propagation in heterogeneous medium using k-space method. Metallurgical and Mining Industry, 3, pp. 23–27.
15. Stupnik, N. I., Fedko, M. B., Pismennyi, S. V. and Kolosov, V. A., 2014. Development of recommendations for choosing excavation support types and junctions for uranium mines of state-owned enterprise skhidHZK. Naukovyi Visnyk Natsionalnoho Hirnychoho Universytetu, 5, pp. 21–25.
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