Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia¹ ; Fedorovsky Polar State University, Norilsk, Russia²

A. A. Eremenko^1,2, Chief Researcher, Doctor of Engineering Sciences, Professor, Corresponding Member of the Russian Academy of Sciences, EremenkoA1949@yandex.ru

Global BVR, LLC, Mytishchi, Russia

A. V. Volkov, CEO

EVRAZRUDA’s Division of PJSC EVRAZ, Tashtagol, Russia

V. A. Shtirts, Deputy Chief Rockburst Engineer, Candidate of Engineering Sciences
A. S. Kupriyanov, Chief Engineer, Tashtagol Mine

Ore bodies and enclosing rock mass at the Tashtagol deposit are intersected with faults, factures and various composition dykes. The mining system is block caving. Blast patterns use blastholes drilled close together, parallel to each other, 105 and 160 mm in diameter, blasted toward cushion chambers or pre-blasted rock mass. It is found that rapidly growing depth of mining operations, increased stresses in rock mass, as well as blasting of explosive charges more than 100 tons in mass are accompanied by geodynamic phenomena and seismic events. In this regard, in order to reduce energy class of seismic events, sectional blasting of block no. 10 was carried out with a decrease in the mass of explosive charges less than 100 tons. Earlier, during pre-blast preparation of block no. 10, more than 550 shocks of the energy class from 1–3 to 5 and above were recorded together with micro-bumps. The distribution of the mass of explosive charges per delay intervals from 50 to 600 ms during blasting of three sections of the test block is described. It is found that the magnitude of the explosion was 3.0 when the central section caved because between the delays of 150 to 250 ms, the explosive charge mass was higher than during blasts in the western and eastern sections. The geomechanical condition of rock mass was estimated using the microseismic and seismic methods. It was revealed that during blasting of the eastern section of the block, the maximum velocity of seismic vibrations of ground surface was 5 times less than the maximum allowable value.

1. Wang C., Zhao X., Zhu Q., Yu W., Wu T. Microseismic source location method and microseismic event source parameter characteristic analysis for surface microseismic system. Mining, Metallurgy & Exploration. 2025. Vol. 42, Iss. 5. pp. 2963–2980.
2. Kamran M., Faizan M., Wang S., Han B., Wang W.-Y. Generative AI and prompt engineering: transforming rockburst prediction in underground construction. Buildings. 2025. Vol. 15, Iss. 8. ID 1281.
3. Yan H., Li H., Xie H., Xiao M., Pei J. et al. A review on rockburst prediction and prevention to shape anontology‐based framework for better decision‐making for underground excavations. Deep Underground Science and Engineering. 2025. DOI: 10.1002/dug2.70034
4. Zhou J., Zhang Y., Li C., He H., Li X. Rockburst prediction and prevention in underground space excavation. Underground Space. 2023. Vol. 14. pp. 70–98.
5. Wang Y., Ma G., Rezania M. A granular anisotropic model of underground rockburst consid ering the effect of radial stresses. Tunnelling and Underground Space Technology. 2025. Vol. 155. ID 106202.
6. Daniel C., Cheng S., Yin X., Barr ie Z. M., Pan Y. et al. AI-aided short-term decision making of rockburst damage scale in underground engineering. Underground Space. 2025. Vol. 23. pp. 362–378.
7. Zhu Z., Sun F., Jiaqi G. Study on rockburst tendency of deep under ground engineering based on multi-factor influence. Electronic Journal of Structural Engineering. 2023. Vol. 23, No. 1. pp. 1–12.
8. Qiu J., Xie H., Zhu J., Wang J., Deng J. Dynamic response and rockburst characteristics of underground cavern with unexposed joint. International Journal of Rock Mechanics and Mining Sciences. 2023. Vol. 169. ID 105442.
9. Eremenko V. A., Galchenko Yu. P., Yanbekov A. M. Justifica tion of new opportunities for the use of the gravitational energy of the earth in underground ore mining with convergent geotechnologies. Eurasian Mining. 2022. No. 1. pp. 3–7.
10. Eremenko A. A., Eremenko V. A., Lobanova T. V. et al. Safety guidelines for mining operations at the rockburst-hazardous Tashtagol Deposit. Novosibirsk–Novokuznetsk, 2023. 76 p.
11. Ashurkov V. A. Deep-set faults in Gornaya Shoria by geophysical data. Tectonics of the Altai-Sayany Mountainous Region: Conference Proceedings. Novokuznetsk, 1971. pp. 21–40.
12. Kalugin A. S., Kalugina T. S., Ivanov V. I. et al. Iron ore deposits in Siberia. Novosibirsk : Nauka, 1981. 239 p.
13. Dubynin N. G., Vlasov V. N., Kovalenko V. A. et al. Application of the Siberian technology of ore mining: A case-study. Gornyi Zhurnal. 1975. No. 12. pp. 21–22.

14. Eremenko A. A. Geomechanical substantiation of ore mining at great depths in zones of high seismic activity : Theses of Dissertation of Doctor of Engineering Sciences. Novosibirsk, 1995. 41 p.
15. Matveev I. F. Rockburst control in rock mass by changing parameters of blasting at iron ore deposits in Siberia : Theses of Dissertation of Doctor of Engineering Sciences. Kemerovo, 2004. 34 p.
16. Shrepp B. V., Senkus V. V., Fryanov V. N. et al. Tectonic-type rockbursts and induced earthquakes at the Tashtagol deposit. Vestnik Rossiyskoy Akademii estestvennykh nauk. Zapadno-Sibirskoe otdelenie. 2006. Vol. 8. pp. 163–171.
17. Emanov A. F., Emanov A. A., Fateev A. V., Shevkunova E. V., Gladyshev E. A. The evolution of altai seismicity following the Chuya Earthquake of 2003. Journal of Volcanology and Seismology. 2023. Vol. 17, No. 6. pp. 460–473.
18. Kurlenya M. V., Eremenko A. A., Matveev I. F., Gaydin A. P. Effect of mass explosions on seismic energy of gynamic phenomena in massive rocks. Gornyi Zhurnal. 1996. No. 5. pp. 12–14.
19. Eremenko A. A., Koltyshev V. N., Eremenko V. A., Shtirtz V. A. Seismic hazard assessment and abatement geotechnology for safe iron ore mining in west Siberia. Proceedings of the 8th International Symposium on Rockbursts and Seismicity in Mines. Perm : Geophysical Survey of Russian Academy of Sciences, 2013. pp. 434–445.
20. Razumov E. E., Prostov S. M., Mulev S. N., Rukavishnikov G. D. Seismic information processing algorithms. MIAB. 2022. No. 2. pp. 17–29.
21. Lazarevich T. I., Mazikin V. P., Malyi I. A., Kovalev V. A., Polyakov A. N. et al. Geodynamic zoning in South Kuzbass. Kimerovo : Nauchno-issledovatelskiy institut gornoy geomekhaniki i marksheyderskogo dela, 2006. 181 p.