Ultimate Parameters of Drilling and Blasting Operations in Longhole Blasting in Production Stopes of Gubkin Mine (‘Kombinat KMAruda’ JSC)
- Tyupin V.N.1, Kublikov S.N.1,2
1 Belgorod State University, Belgorod, Russian Federation
2 ‘Kombinat KMAruda’ JSC, Gubkin, Russian Federation
Russian Mining Industry №4 / 2020 стр. 92-97
Abstract: The main objective of the paper is to determine the ultimate parameters of drilling and blasting operations and to develop recommendations for execution of large-scale blasting of ferruginous quartzite in the mine of ‘Kombinat KMAruda’ JSC. Within the scope of this research the term of ultimate parameters shall mean the line of least resistance, the hole spacing and the explosive ratio, which change (in-crease of the line of least resistance, reduction of the explosive ratio) will prevent breaking of ferruginous quartzites off the rock mass (poor fragmentation). The issues of poor fragmentation and toe formation is a challenge in blasting operations for both underground and surface mining. As the result of research carried out in Gubkin mine, a number of problems were identified related to poor rock mass fragmentation upon blasting operations. The paper analyzes the causes of poor fragmentation in large-scale blasting. Mathematical calculations helped to determine the dependencies needed to identify the ultimate parameters for the line of least resistance and the explosive ratio for efficient rock blasting. The ultimate long hole deviations from the design position are provided. In order to reduce the negative impact of borehole deviation that leads to poor rock mass fragmentation during blasting, it is rec-ommended to introduce the following ferruginous quartzite mining methods at the Gubkin mine of the KMAruda Kombinat JSC: transition to the sublevel room-and-pillar system (2-3 sublevels); use of directional drilling units; drilling of blast holes with larger-size drill strings.
Keywords: sublevel room-and-pillar system, long hole deviation, directional survey, blasting operations, drilling and blasting operations, poor rock mass fragmentation, ultimate drilling and blasting parameters, line of least resistance, explosive ratio
For citation: Tyupin V.N., Kublikov S.N. Ultimate Parameters of Drilling and Blasting Operations in Longhole Blasting in Production Stopes of Gubkin Mine (‘Kombinat KMAruda’ JSC). Gornaya promyshlennost = Russian Mining Industry. 2020;(4):92–97. (In Russ.) DOI: 10.30686/1609-9192-2020-4-92-97.
Article info
Received: 27.07.2020
Revised: 10.08.2020
Accepted: 17.08.2020
Information about the author
Vladimir N. Tyupin – Doctor of Technical Sciences, Professor, Belgorod State University, Belgorod, Russian Federation, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
Sergey N. Kublikov – Post-Graduate Student, Belgorod State University, Belgorod, Russian Federation; Deputy Chief Engineer for Drilling and Blasting Operations of Gubkin Mine, ‘Kombinat KMAruda’ JSC, Gubkin, Russian Federation, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.
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