SURFACE MINING
Original Paper
UDC 622.85:622.235 © V.N. Zakharov, V.S. Fedotenko, N.N. Efremovtsev, 2023
ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2023, № 12, pp. 73-79
DOI: http://dx.doi.org/10.18796/0041-5790-2023-12-73-79
Title
RESEARCH OF TECHNOGENIC IMPACT OF EXPLOSIVE WORKS DURING OPEN-PIT MINING OF COAL DEPOSITS
Authors
Zakharov V.N.1, Fedotenko V.S.1, Efremovtsev N.N.1
1N.V. Melnikov Institute of Comprehensive Exploitation of Mineral Resources of the Russian Academy of Sciences, Moscow, 111020, Russian Federation
Authors Information
Zakharov V.N., Doctor of Engineering Sciences, Academician of the Russian Academy of Sciences, Professor, Director, e-mail: ipkon-dir@ipkonran.ru
Fedotenko V.S., Doctor of Engineering Sciences, Deputy director for research, e-mail: victorfedotenko@gmail.com
Efremovtsev N.N., PhD (Ehgineering), A Full-Fledged Member of the Academy of Mining Sciences, Senior Research Associate at Department No. 5 of Geomechanics and Rock Disintegration, e-mail: noee7@mail.ru
Abstract
The paper briefly characterizes mining conditions at open-pit mining operations of UK Kuzbassrazrezugol JSC, as well as dependences of the man-made impact of blasting operations depending on the influencing factors. The obtained dependencies can be used in formation of a digital multifactor model of man-made environmental impact of blasting operations. The ways are considered to safely increase the volume of simultaneously blasted rock mass. The article shows the dependence of changes in the load on the atmosphere with from the blast center, the weight of simultaneously blasted explosives in surface mining operations, as well as the dependence between the yield of fines and the size of the gap between the charge and the charging chamber. Reducing the specific consumption of explosives, energy intensity of mining, the man-made impact of blasting operations on the environment, as well as increasing the hazardous zone range - all of this can be achieved by using charges placed in hoses of variable diameter that would ensure a gap between the charge the the borehole wall when blasting wet and dry rock masses. It was extablished that one of the ways to safely increase the volume of simultaneously blasted rock mass is the introduction of energy-saving environmentally friendly technologies in production and use of industrial explosives, which would ensure higher completeness of chemical transformations and the efficiency of the blast through the use of special fuel mixtures containing surfactants instead of diesel fuel in the compositions of granular industrial explosives, as well as changing the rheological properties, morphology of the industial explosive components, stability and energy intensity of explosive charges at zero oxygen balance due to increasing the contact area of the fuel and oxidizer by several orders of magnitude.
Keywords
Drilling and blasting operations, Energy release modes, Formation and propagation of dust and gas clouds, Yield of fines, Open pit mining, Equipment performance, Anthropogenic effects of blast breaking, Rocks, Charge and stemming design.
References
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Acknowledgements
The research was performed as part of Activity No.1 of the Integrated Scientific and Technical Programme of the Full Innovation Cycle, approved by Order No. 1144-р of the Government of the Russian Federation as of May 11, 2022, and Agreement No. 075-15-2022-1185 as of September 28, 2022, on providing grants from the federal budget in the form of subsidies in accordance with Item 4 of Article 78.1 of the Budget Code of the Russian Federation.
For citation
Zakharov V.N., Fedotenko V.S. & Efremovtsev N.N. Research of technogenic impact of explosive works during open-pit mining of coal deposits. Ugol’, 2023, (12), pp. 73-79. (In Russ.). DOI: 10.18796/0041-5790-2023-12-73-79.
Paper info
Received October 2, 2023
Reviewed November 10, 2023
Accepted November 27, 2023
