Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia

A. A. Eremenko, Chief Researcher, Professor, Doctor of Engineering Sciences, eremenko@ngs.ru
A. I. Konurin, Senior Researcher, Candidate of Engineering Sciences

EVRAZ United West Siberian Metal Plant, Tashtagol, Russia
V. A. Shtirts, Deputy Chief Engineer for Rock Bursts at Mining Assets Subdivision

Global BVR LLC, Mytishchi, Russia
A. V. Volkov, CEO

At the present stage of development of the mining industry, drilling and blasting should guarantee high-quality fragmentation of rocks at the decreased dynamic impact on enclosing rock mass. With the transition of mining operations to the depths greater than 1000 m, the operating conditions of the iron ore deposits in Gornaya Shoria deteriorate sharply due to the geodynamic phenomena of varying intensity, especially during largescale blasting. The increase in the depth of solid mineral mining is accompanied by a natural increase in the initial stresses, initiation of geodynamic phenomena due to rock outbursts in mines and by impairment of ground control. After large-scale blasting, dynamic events induced by rock pressure are often observed, including an increase in the magnitude and energy class of the events and rock bursts. The purpose of this study is the safety of stoping operations with the decrease in the seismic energy of geodynamic phenomena during blasting. To this effect, the geodynamic situation during stoping within the test mine fields for the period of 2022 was analyzed, and the influence exerted by the location of blast sites, mass of explosives and delay intervals on the geodynamic behavior of ore bodies and enclosing rock mass was comprehensively studied. Based on the experimental research, the dependences of the magnitude of events and the energy class of shocks on the mass of explosive charges during blasting in different areas and at different depths at the Tashtagol and Sheregesh deposits were obtained, and the location of concentration zones and the energy of shocks in rock mass were determined.

1. Golik V. I., Razorenov Yu., Puzina V. S., Stas G. V. Differentiated assessment of stability of exposed rock surfaces in sublevel stoping with backfill. Journal of Mining Science. 2021. Vol. 57, No. 5. pp. 787–794.
2. Kozyrev A. A., Savchenko S. N., Panin V. I., Semenova I. E., Rybin V. V. et al. Geomechanical processes in the geological environment of geotechnical systems and geodynamic risk management. Apatity : KNTs RAN, 2019. 431 p.
3. Marysyuk V. P., Darbinyan T. P., Andreev A. A., Noskov V. A. Efficiency of modification of the copper–nickel sulfide ore mining system in the Oktyabrsky mine. Gornyi Zhurnal. 2019. No. 11. pp. 19–23.
4. Lukichev S. V., Onuprienko V. S., Semenova I. E., Belogorodtsev O. V. Increasing production capacity of an underground mine at deep levels. Gornyi Zhurnal. 2019. No. 10. pp. 85–88.
5. Sergunin M. P., Darbinyan T. P., Mushtekenov T. S., Balandin V. V. Assessment of destressing drilling efficiency using numerical methods: A case-study of Oktyabrsky deposit. Gornyi Zhurnal. 2021. No. 2. pp. 26–31.
6. Eremenko A. A., Shaposhnik Yu. N., Filippov V. N., Konurin A. I. Development of scientific framework for safe and efficient geotechnology for rockbursthazardous mineral deposits in Western Siberia and the Far North. Gornyi Zhurnal. 2019. No. 10. pp. 33–39.
7. Eremenko A. A., Darbinyan T. P., Aynbinder I. I., Konurin A. I. Geomechanical assessment of rock mass in the Talnakh and Oktyabrsky deposits. Gornyi Zhurnal. 2020. No. 1. pp. 82–86.
8. Sergunin M. P., Marysyuk V. P., Darbinyan T. P., Sabyanin G. V. Kinematic analysis of rock mass movement parameters in mining systems with caving. Gornyi Zhurnal. 2022. No. 1. pp. 74–79.
9. Mertuszka P., Szumny M., Fuławka K., Kondoł P. Novel approach for the destress blasting in hard rock underground copper mines. Journal of Sustainable Mining. 2022. Vol. 21, No. 2. pp. 141–154.
10. Jiliang Kan, Linming Dou, Jiazhuo Li, Xuwei Li, Jinzheng Bai et al. Characteristics of microseismic waveforms induced by underground destress blasting: Comparison with those induced by ground blasting and coal mining. Frontiers in Earth Science. 2022. Vol. 10. 797358.
11. Ping Cheng, Yanbo Li, Caiwu Lu, Song Jiang, Hanhua Xu. Study on blasting effect optimization to promote sustainable mining under frozen conditions. Sustainability. 2022. Vol. 14, Iss. 24. 16479.
12. Moein Bahadori. Designing the surface and underground blasting operations to avoid damage to concrete structures in Gotvand Olya Dam using genetic algorithm. Geotechnical and Geological Engineering. 2022. Vol. 40. pp. 5685–5699.
13. Ibrahim Elhadji Daou, Souley Harouna, Abdourazakou Maman Hassan, Harouna Boukari, Hamza Cheik Yida Oauba. Monitoring of blasting operations techniques and assessment of their impacts on groundwater in the context of underground mining: Case of ROXGOLD SANU, Burkina Faso. International Journal of Environment and Climate Change. 2022. Vol. 12, Iss. 12. pp. 491–505.
14. Jin-Shuai Zhao, Bing-Rui Chen, Quan Jiang, Jian-Fei Lu, Xian-Jie Hao et al. Microseismic monitoring of rock mass fracture response to blasting excavation of large underground caverns under high geostress. Rock Mechanics and Rock Engineering. 2022. Vol. 55, Iss. 2. pp. 733–750.
15. Eremenko V. A. Justification of geotechnology parameters for rockburst-hazardous iron ore deposits in West Siberia : Theses of Dissertation of Doctor of Engineering Sciences. Moscow, 2011. 39 p.
16. Eremenko A. A., Mulev S. N., Shtirts V. A. Microseismic monitoring of geodynamic phenomena in rockburst-hazardous mining conditions. Journal of Mining Science. 2022. Vol. 58, Iss. 1. pp. 10–19.