FORECASTING ROCK BURST HAZARD OF TECTONICALLY DISTURBED ORE MASSIF AT THE DEEP HORIZONS OF NIKOLAEVSKOE POLYMETALLIC DEPOSIT
- 1 — Saint-Petersburg Mining University ▪ Orcid
- 2 — Institute of Mining of the Far Eastern Branch of the Russian Academy of Sciences
- 3 — Institute of Mining of the Far Eastern Branch of the Russian Academy of Sciences
Abstract
The subject of the research is the stress-strain and rock burst hazardous state of the ore massif of the Nikolaevskoe polymetallic deposit, formed under the influence of complex mining-geological and mining-technical factors. The purpose of the research is to establish the peculiarities of the formation of technogenic stress fields at the deposit, which is characterized by a block structure, a complex tectonic system and the presence of a large volume of developed spaces. Volumetric geodynamic modeling of the stress-strain state of the massif at different stages of the development of the deep horizons of the deposit was carried out by collecting information on the structure, properties and geodynamic state of the rock mass. The assessment of stress changes taking into account the effect of hypsometry, the configuration of the selvages, the physical-mechanical properties of the ore deposit and host rocks, the presence of tectonic disturbances was made using the developed numerical algorithms, the automation equipment of the initial data and the PRESS 3D URAL software. The simulation made it possible to establish that tectonic faults in the massif lead to a qualitative change in the stress-strain state in certain parts of the ore massif and in the pillars, namely, the reduction of stresses along the tectonic faults and their growth in nearby pillars. The identified features of the distribution of stresses in the tectonically disturbed rock massif of the Nikolaevskoe deposit will allow to identify in advance potentially hazardous areas both at the planning stage of mining operations and during development, as well as to work out effective rock burst measures to increase the safety of mining. The results of research can be used in enterprises with similar mining-geological and mining-technical conditions.
References
- Rasskazov I.Yu., Saksin B.G., Usikov V.I., Potapchuk M.I. Geodynamic state of the massif of rocks of the Nikolaev poly-metallic field and features of the manifestation of rock burst hazard during its development. Gornyi zhurnal. 2013. N 10, р. 6-10.
- Levi K.G., Sherman S.I., San'kov V.A. et al. Map of modern geodynamics of Asia. Masshtab 1: 5000000. IZK SO RAN. Ir-kutsk, 2007.
- Rasskazov I.Yu. Geoacoustic precursors of rock bursts. Vestnik Dal'nevostochnogo gosudarstvennogo tekhnicheskogo un-iversiteta. 2011. N 3-4, р. 121-143.
- Rasskazov I.Yu. Control and management of rock pressure in the mines of the Far Eastern region. Moscow: Izd-vo «Gornaya kniga», 2008, р. 329.
- Rasskazov I.Yu., Potapchuk M.I., Potapchuk G.M. Simulation of geomechanical processes in the development of the Niko-laevskoye field, hazardous to rock bumps. Vestnik TOGU. 2010. N 2, p. 75-84.
- Shevchenko B.F., Saksin B.G., Gil'manova G.Z., Dovbnich M.M. Regional geodynamic features of the ore regions of Transbaikalia and the Far East of Russia. GIAB. 2013. № OV4, р.49-60.
- Saksin B.G., Rasskazov I.Yu., Shevchenko B.F. Principles of a comprehensive study of the modern stress-strain state of the upper levels of the Earth's crust of the Amur lithospheric plate. Fiziko-tekhnicheskie problemy razrabotki poleznykh iskopaemykh. 2015. N 2, р. 53-66.
- Sidorov D.V. The use of the automated software package «PRESS 3D URAL» for prediction of rock burst hazardous zones and parameters of advance borehole discharge of the ore deposit and pillars in difficult geomechanical conditions. Zapiski Gornogo instituta. 2013. Vol. 204, р. 284-293.
- Sidorov D.V. Geomechanical support of the room-and-pillar system for the development of rock burst hazardous deposits of the Severouralsk bauxite basin at great depths: Avtoref. dis… d-ra tekhn. nauk. Natsional'nyi mineral'no-syr'evoi universitet «Gornyi». St. Petersburg, 2016, p. 44.
- Rasskazov I.Yu., Kursakin G.A., Chernomortsev V.N., Osadchii S.P.et al. Guidelines for the safe conduct of mining at the Nikolaevsk and Yuzhny deposits (OJSC «GMK «Dalpolimetall»), liable to rock bursts. IGD DVO RAN. Khabarovsk, 2008, р. 64.
- Federal norms and rules in the field of industrial safety «Regulations on the safe conduct of mining operations in fields liable and dangerous to rock bursts.» Approved by the Order of the Federal Service for Environmental, Technological and Nuclear Supervision of December 2, 2013. N 576. Byulleten' normativnykh aktov federal'nykh organov ispolnitel'noi vlasti. 2014. N 22, p. 78.
- Khanchuk A.I. Geodynamics, magmatism and metallogeny of the East of Russia: in 2 volumes. Vladivostok: Dal'nauka, 2006. Vol. 2, р. 572.
- Galdeano C.S., Shanov S., Galindo-Zaldívar J., Radulov A., Nikolov G. A new tectonic discontinuity in the Betic Cordillera deduced from active tectonics and seismicity in the Tabernas Basin. Journal of Geodynamics. 2010. Vol. 50. Iss. 2, p. 57-66.
- Marcak H., Mutke G. Seismic activation of tectonic stresses by mining. J. Seismol. 2013. Vol. 17. № 4, р. 1139-1148.