Seismic behavior of rock mass in mining rockburst-hazardous deposits in the Khibiny Massif

The article describes the seismicity analysis of rockburst-hazardous apatite–nepheline deposits in the Khibiny Massif as a case-study of Kirov and Rasvumchorr mines. The source data are the seismic monitoring results from the automated control systems in Kirov and Rasvumchorr mines of Apatit JSC. The analysis reveals the patterns of the seismic behavior of rock mass, as well as the formation and localization of potentially hazardous zones in mining rockburst-hazardous deposits in Khibiny for the monitoring period of 10 years. The increased seismic activity areas are: the areas nearby active mining operations and the uncaved overhang in the hanging wall. It is found that structural geological discontinuities in rock mass periodically become active. It is emphasized that the number of strong seismic events in the footwall grows, and, moreover, such events take place deep inside rock mass. The activation of seismicity is largely governed by higher water content of rocks. The impact of this factor is particularly acute in the Central open pit in the spring, due to heavy snow melting. The implemented research proves again that the long-term seismic monitoring is the effective tool of the real-time ground control in the Khibiny Massif, and enables early prevention of dynamic events induced by rock pressure, or minimization of risks in case that such events yet happen.

Keywords: rockburst-hazardous deposits, geodynamic safety, seismic monitoring, induced seismicity, underground mining, Khibiny Massif, Kirov mine, Rasvumchorr mine.
For citation:

Zhukova S. A., Zhuravleva O. G., Onuprienko V. S., Streshnev A. A. Seismic behavior of rock mass in mining rockburst-hazardous deposits in the Khibiny Massif. MIAB. Mining Inf. Anal. Bull. 2022;(7):5-17. [In Russ]. DOI: 10.25018/0236_1493_2022_7_0_5.

Acknowledgements:
Issue number: 7
Year: 2022
Page number: 5-17
ISBN: 0236-1493
UDK: 550.343, 622.83
DOI: 10.25018/0236_1493_2022_7_0_5
Article receipt date: 09.03.2022
Date of review receipt: 16.05.2022
Date of the editorial board′s decision on the article′s publishing: 10.06.2022
About authors:

S.A. Zhukova1, Cand. Sci. (Eng.), Senior Researcher, e-mail: svetlana.zhukowa@yandex.ru, ORCID ID: 0000-0003-0769-6584,
O.G. Zhuravleva1, Cand. Sci. (Eng.), Senior Researcher, e-mail: o.zhuravleva@ksc.ru, ORCID ID: 0000-0002-8986-9559,
V.S. Onuprienko2, Chief Engineer, e-mail: VOnuprienko@phosagro.ru,
A.A. Streshnev2, Head of Department of Rockburst Forecasting and Prevention, e-mail: astreshnev@phosagro.ru,
1 Mining Institute, Kola Scientific Centre of Russian Academy of Sciences, 184209, Apatity, Russia,
2 Kirovsk Branch JSC «Apatit», 184250, Kirovsk, Russia.

 

For contacts:

O.G. Zhuravleva, e-mail: o.zhuravleva@ksc.ru.

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