SURFACE MINING
Original Paper
UDC 622.23.2 © A.A. Sobolev, A.A. Galimyanov, 2022
ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2022, № 2, pp. 22-25
DOI: http://dx.doi.org/10.18796/0041-5790-2022-2-22-25
Title
Technical and Economical Analysis of Drilling and Blasting Parameters Depending on the Depths Increase in Coal Mining
Authors
Sobolev A.A.1, Galimyanov A.A.1
1Khabarovsk Federal Research Center, Khabarovsk, 680000,Russian Federation
Authors Information
Sobolev A.A., Leading Research Associate, Institute of Mining,e-mail: sobolev@khfrc.ru
Galimyanov A.A., Senior Research Associate, Institute of Mining, e-mail: azot-1977@mail.ru
Abstract
The authors of the article assessed the impact of the depth of open-pit coal mining on the change in the main parameters of drilling and blasting operations as well as their costs. At the “Bureinsky” and “Pravoberezhny” coal open-pits which belong to “Urgalugol” enterprise, it was investigated that as long as mining operations going deeper, the physical and mechanical properties of coal seams and in-situ rocks change, geological and organizational conditions of mining become significantly more complicated. These changes dramatically affect the actual parameters of the D&B, which ultimately leads to an increase in production and operation costs. In this regard, there significant discrepancies arise in the designed and actual budgets for overburden removal and mining operations. To calculate, adjust and justify the main production parameters, it is proposed to use the indicator of the actual weighted average number of the D&B operating bench, which is calculated from the volume of the blasted rock mass on each of the benches. It is established that the corresponding weighted average number of the bench, for a certain period of time, has a direct relationship with the specific operating costs, powder factor as well as the volume of rock blasted per 1 meter of the blast hole. The use of this indicator significantly simplifies the calculation and analysis of the main design and actual engineering parameters, makes it convenient to justify the appropriate rational parameters, allows to predict changes and fluctuations in the economic indicators of the D&B process.
Keywords
Open-cast mining, Coal open-pit, Drilling and blasting operations, Mining depth, Rocks, Main parameters, Production costs.
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For citation
Sobolev A.A., Galimyanov A.A. Technical and Economical Analysis of Drilling and Blasting Parameters Depending on the Depths Increase in Coal Mining.Ugol’, 2022, (2), pp. 22-25. (In Russ.). DOI: 10.18796/0041-5790-2022-2-22-25.
Paper info
ReceivedDecember 18, 2021
Reviewed December 28, 2021
Accepted January 18, 2022
