Geomechanical problems of mining the lower horizons of the Yuzhnoye deposit (Primorsky krai)

Yuzhnoye polymetallic deposit is located in the Eastern Primorye of Russia and since 1986 has been classified as dangerous by mountain impacts. In recent years, a complex geomechanical situation has been developing at the field — up to 100 tremors per year are recorded. For complex geomechanical monitoring of impact hazard, a project was developed and implemented to install a multi-channel geoacoustic system of the AMPMS “PrognozADS”, developed at the Mining Institute of the FEB RAS of Khabarovsk. By means of visual observations and instrumental measurements of the parameters of the seismic activity of the rock mass for the period from December 2022 to February 2023, 1080 seismic and acoustic events were recorded, including 12 aftershocks. According to the monitoring data, the excess of the average daily quantitative indicator of AE events before the shocks was found to be up to 50% in comparison with other periods. The block No. 1 in the interval between level +440m and level +480m, as well as the area of intersection of mine workings with the recumbent side of the El Dorado fault zone and the Rudny fault in the area of blocks No. 2 and No. 3, is recognized as the most impact-prone area in the area of the geophone network. Based on the results of the study, a plan was formed to expand the network of geophones of the PrognozADS system on the lower horizons of the field in the western direction to improve the quality of geomechanical monitoring and obtain more accurate information about the causes of large local manifestations of impact hazard being recorded. Establishing the causes of the impact hazard will allow in the future to develop the necessary complex of geomechanical measures to improve the safety of mining operations at deep levels.

Lomov М. А., Sidlyar А. V., Konstantinov А. V., Grunin А. P. Geomechanical problems of mining the lower horizons of the Yuzhnoye deposit (Primorsky krai). MIAB. Mining Inf. Anal. Bull. 2023;(12-1):87—99. [In Russ]. DOI: 10.25018/0236_1493_2023_122_0_87.

The studies were carried out using the resources of the Center for Shared Use of Scientific Equipment “Center for Processing and Storage of Scientific Data of the Far Eastern Branch of the Russian Academy of Sciences”, funded by the Russian Federation represented by the Ministry of Science and Higher Education of the Russian Federation under project No. 075−15−2021−663.

Lomov M. A., junior Researcher at the Laboratory of Digital Methods of Research of Natural and Technical Systems of the Federal State Budgetary Institution of Science, Institute of Mining, FEB RAS — a separate subdivision of the Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences (IGD FEB RAS), 680000, Khabarovsk, Turgenev str., 51, Russia, е-mail: 9241515400@mail.ru, orcid.org/0000−0003−4346−7447;
Sidlyar A. V., researcher Geomechanics Laboratory, Mining Institute KhFRC FEB RAS, 680000, Khabarovsk, Turgeneva st, 51, Russia, е-mail: alex-igd@mail.ru orcid. org/0000−0002−9619−4334;
Konstantinov A. V., researcher at the Geomechanics Laboratory of the Federal State Budgetary Institution of Science, Institute of Mining, FEB RAS — a separate subdivision of the Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences (IGD FEB RAS), 680000, Khabarovsk, Turgenev str., 51, Russia, е-mail: alex-sdt@yandex.ru, orcid.org /0000−0001−6481−292X;
Grunin A. P., researcher at the Laboratories of Mining Geophysics of the Federal State Budgetary Institution of Science, Institute of Mining, FEB RAS — a separate subdivision of the Khabarovsk Federal Research Center of the Far Eastern Branch of the Russian Academy of Sciences (IGD FEB RAS), 680000, Khabarovsk, Turgenev str., 51, Russia, е-mail: lexx188@mail.ru, orcid.org/0009−0002−2394−5608.

Lomov Mikhail Andreevich, e-mail: 9241515400@mail.ru.

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