A method to improve the quality of rock preparation for extraction with emulsion explosives in open-pit mines with high benches
Pytalev I.A.1, Domozhirov D.V.1, Shvabenland E.E.2, Prokhorov A.A.3, Pronin V.V.4
1 Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation
2 All-Russian Scientific-Research Institute of Mineral Resources named after N.M.Fedorovsky, Moscow, Russian Federation
3 RIF-Mikromramor LLC, Magnitogorsk, Russian Federation
4 KRU-VZRYVPROM LLC, Kemerovo, Russian Federation
Russian Mining Industry №6 / 2021 р. 62-67
Abstract: Increasing the production capacity of open-pit and strip mines while ensuring the efficiency of the mining enterprise can be achieved through enhancing the quality of rock preparation prior to excavation. The use of emulsion explosives and the transition to the high-bench technology can reduce the cost of mining operations by optimizing the drilling and blasting parameters. The article reviews methods to improve the efficiency of rock preparation for extraction based on the applicable scientific and methodological principles and it proposes a method to regulate the density of emulsion explosives. Schemes are presented for calculation of drilling and blasting parameters when implementing technical measures aimed at improving the blasting quality through rock preparation for extraction in conditions of overburden and mining operations with bench height of 15 m and higher. Parameters of drilling and blasting operations on high benches are justified with differentiation of the charge density along the length of the blast hole by controlling the delivery of the gas-generating additive. A simulation has been performed and the results of pilot tests of the emulsion explosive charge density control at the Ural deposits are presented.
Keywords: high-bench mining technology, emulsion explosives, gas-generating additives, quality and parameters of drilling and blasting operations, pilot tests, explosive density, mixing and charging machine
Acknowledgments: The paper was prepared with the financial support of Presidential Grant RF MD-3602.2021.1.5.
For citation: Pytalev I.A., Domozhirov D.V., Shvabenland E.E., Prokhorov A.A., Pronin V.V. A method to improve the quality of rock preparation for extraction with emulsion explosives in open-pit mines with high benches. Gornaya promyshlennost = Russian Mining Industry. 2021;(6):62–67. DOI: 10.30686/1609-9192-2021-6-62-67.
Article info
Received: 16.11.2021
Revised: 01.12.2021
Accepted: 02.12.2021
Information about the authors
Ivan A. Pytalev – Dr. Sci. (Eng.), Professor, Professor, Department of Mineral Deposits Development, Director of the Institute of Mining and Transportation, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Dmitry V. Domozhirov – Cand. Sci. (Eng.), Associate Professor, Department of Mineral Deposits Development, Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Elena E. Shvabenland – Cand. Sci. (Eng.), Head of Non-ferrous, Rare and Noble Metals Sector, All-Russian Scientific-Research Institute of Mineral Resources named after N.M.Fedorovsky, Moscow, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Alexey A. Prokhorov – Director of RIF-Mikromramor LLC, Magnitogorsk, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Viktor V. Pronin – Head of Bachatsky Explosives Production Complex, KRU-VZRYVPROM LLC, Kemerovo, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
References
1. Miyakea A., Takaharaa K., Ogawaa T., Ogatab Y., Wadac Y., Arai H. Influence of physical properties of ammonium nitrate on the detonation behaviour of ANFO. Journal of Loss Prevention in the Process Industries. 2001;14(6):533–538. https://doi.org/10.1016/S0950-4230(01)00041-9
2. Mikhailov Yu.M., Kolganov E.V., Sosnin V.A. Safety of ammonium nitrate and its application in industrial explosives. Dzerzhinsk: Partner-plyus; 2008. 304 p. (In Russ.)
3. Kutuzov B.N. Handbook of a blast operator. Part. 2. Techniques, technologies and safety of blasting operations. Moscow: Gornoe delo; 2014. 304 p. (In Russ.)
4. Kutuzov B.N. Safety of blasting operations in mining and industrial applications. Moscow: Gornaya kniga; 2009. 670 p. (In Russ.)
5. Finger M., Helm F., Lee E. et al. Characterization of commercial, composite explosives. In: Processes 11th Symposium (International) on Detonation. USA; 1976, pp. 1–11.
6. Domozhirov D.V., Pytalev I.A., Nosov I.I., Nosov V.I. Improving of the quality of fragmentation and optimization of drilling and blasting parameters in the application of emulsion explosives and mining technology of high ledges on ore deposits. MIAB. Mining Inf. Anal. Bull. 2016;(S36):35–42. (In Russ.)
7. Domozhirov D.V., Ugolnikov N.V., Genkel A.V. Analysis of techniques and technology of drilling and blasting operations when using emulsion explosives in open-pit mines of the South Urals region. In: Actual problems of modern science, technology and education. Magnitogorsk: Nosov Magnitogorsk State Technical University; 2012, pp. 67–71. (In Russ.)
8. Rylnikova M.V., Fedotenko V.S., Esina E.N. Substantiation of the parameters of an effective transition to high overburden benches for a more complete development of open-cut mining and environmental safety of mining operations. In: Omel'chuk Yu.A., Lyamina N.V., Kucherik G.V. (eds) Environmental, industrial and energy security – 2017: Proceedings of the Scientific and Practical Conference, Sevastopol, September 11–15, 2017. Sevastopol: Sevastopol State University; 2017, pp. 1165–1169. (In Russ.)
9. Fedotenko V.S., Pronin V.V. Requirements for the quality of drilling and blasting preparation of rocks in transition to backhoes with increased bucket capacity. In: A combined mining system: risks and global challenges in development and preservation of mineral resources: Proceedings of the 11th International Conference, Magnitogorsk, May 24–28, 2021. Magnitogorsk: Nosov Magnitogorsk State Technical University; 2021, pp. 54–55. (In Russ.)
10. Domozhirov D.V., Pytalev I.A., Nosov I.I., Nosov V.I., Gaponova I.V. Substantiation of choice of method of manufacturing and delivery of emulsion explosives in modern conditions of functioning of mining enterprises. IOP Conference Series: Earth and Environmental Science. 2019;272(2):022178. https://doi.org/10.1088/1755-1315/272/2/022178
