Justification of parameters and technology of drilling and blasting operations to ensure the required lumpiness
- Egorov V.V.1, Volokitin A.N.1, Ugolnikov N.V.2, Sokolovsky A.V.3
1 PJSC MMC Norilsk Nickel, Moscow, Russian Federation
2 Nosov Magnitogorsk State Technical University, Magnitogorsk, Russian Federation
3 LLC STC-Geotechnology, Ekaterinburg, Russian Federation
Russian Mining Industry №3 / 2021 р. 110–115
Abstract: The practice of mining and blasting operations both during the development of a mineral deposits, and at the mine design stage, often involves the question of selecting the technology options and operation parameters. Virtually all recommendations for selecting the best production option are based on minimizing the total costs for the entire technological cycle of mining activities. In most cases the optimal technology and parameters of mining and blasting operations depend on the commercial, maximum permissible and average size of the blasted rock mass, which are determined by the type and capacity of the mining haulage equipment. Therefore, the total costs will mainly depend on the commercial or average lump size and the cost of mining transport equipment. The article presents a methodology to select the best technological option for the drilling and blasting operations to obtain the optimal lumpiness (particle-size distribution) of the blasted rock. The optimal range of lumpiness is defined by the total minimum costs for the entire production cycle of mining and processing of minerals. In order to select a rational technology of drilling and blasting and to calculate their parameters it is proposed to take into account the integral criteria of lumpiness in addition to the average lump size. For this purpose, we studied the particle size distribution in the rock mass and in the muck piles.
Keywords: rock mass fracturing, block size, lumpiness of blasted rocks, log-normal distribution law, logarithmic variance, oversize, capital investments
For citation: Egorov V.V., Volokitin A.N., Ugolnikov N.V., Sokolovsky A.V. Justification of parameters and technology of drilling and blasting operations to ensure the required lumpiness. Gornaya promyshlennost = Russian Mining Industry. 2021;(3):110–115. (In Russ.) DOI 10.30686/1609-9192-2021-3-110-115.
Article info
Received: 12.05.2021
Revised: 22.05.2021
Accepted: 31.05.2021
Information about the authors
Egorov Vladimir Vyacheslavovich – Chief Project Engineer of the Project Office for the Develop-ment of Nonmetallic Raw Materials Base, PJSC MMC Norilsk Nickel, Moscow, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Volokitin Andrey Nikolaevich – Head of the Project Office for the Development of Non-Metallic Raw Materials of PJSC MMC Norilsk Nickel, Moscow, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Ugolnikov Nikita Vladimirovich – Ph.D. (Eng.), Assistant Professor, 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.
Sokolovsky Alexander Valentinovich – Doctor of Technical Sciences, General Director of LLC STC-Geotechnology, Ekaterinburg, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
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