Mining Institute, Kola Science Center, Russian Academy of Sciences, Apatity, Russia:

A. A. Kozyrev, Head of Department for Geomechanics, Professor, Doctor of Engineering Sciences
S. A. Zhukova, Senior Researcher, Candidate of Engineering Sciences, svetlana.zhukowa@yandex.ru
O. G. Zhuravleva, Senior Researcher, Candidate of Engineering Sciences

Apatit’s Kirovsk Division, Kirovsk, Russia:

V. S. Onuprienko, Chief Engineer

The paper presents a study of seismicity in the Khibiny massif and reviews development stages of seismic monitoring system and methods for predicting seismic hazard. A brief review of earthquakes in the Khibiny massif, which occurred from the beginning of the development of apatite-nepheline deposits to the present day, is given. The largest earthquake of magnitude 4.2 occurred on April 16, 1989 at the Kukisvumchorr deposit. The paper describes the main stages of seismic monitoring system development for mines in the Khibiny massif in operation by Apatit JSC, and the importance of the Mining Institute of the Kola Science Center, RAS in the formation of this system are given. The monitoring system was first introduced in Kirovsk mine (Kukisvumchorr and Yukspor deposits) and later in Rasvumchorr mine. These seismic monitoring systems have become one of the most important tools of the Rockburst Prediction and Prevention Service of Apatit JSC. They allow monitoring the state of rock mass in real time. This significantly increases safety of mining operations both in terms of operational decision-making and mid-term and long-term preventive measures. The authors studied the features of seismic activity during mining operations. The basics of two prediction techniques are presented. These techniques are the regional prediction of rockburst hazard using continuous monitoring of seismicity and the modern probabilistic approach to seismic hazard assessment. The results of the probabilistic approach to the seismic hazard assessment prove efficiency of the proposed methodology which can be used in the interpretation of seismic monitoring data.

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