N. A. 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
Yu. N. Shaposhnik, Leading Researcher, Professor, Doctor of Engineering Sciences
V. N. Filippov, Senior Researcher, Candidate of Engineering Sciences
A. I. Konurin, Researcher, Candidate of Engineering Sciences

A typical current trend in the mineral mining industry in Russia is progression of mines to increasingly greater depths. The incidental static and dynamic events due to high rock pressure considerably complicate field operation, decrease production efficiency and promote hazardous geotechnical situations in mines. The nature and behavior of events due to rock pressure, especially at great depths, depend, for the first turn, on natural factors and mining technology. The FEM-based numerical modeling is used for the geomechanical assessment of the current geotechnical situation in the Glubokaya Mine in the Oktyabrsky deposit, for the justification of the mine design elements and for the prediction of rock mass stability. For the Tashtagol, Sheregesh and Oktyabrsky deposits, the effective stresses are determined using the methods of borehole slotter and hydraulic fracturing. The procedure of laser scanning is developed and analyzed for designating configuration of compensation chambers in extraction panels and for delimiting mined-out areas. Ignitability and explosibility of ore and enclosing rocks in the course of mining are estimated for mining depths below 1500 m. The rockburst hazard is assessed at the Badran deposit in Yakutia by the criterion of rock brittleness using the method of postlimit deformation. The drilling-and-blasting parameters are substantiated for high-stress rock mass. The calculation procedure is developed for seismically hazardous zones induced by process blasting with regard to allowable values of PPV at the bottom of protected constructions, category of state of the objects, as well as intensity of shocks within a definite period of time. The geotechnology design factors are justified for the period of transition from open stoping to sublevel caving in rockburst-hazardous blind ore bodies.

1. Eremenko A. A., Gakhova L. N., Eremenko V. A. Effect of mining sequence on stress–strain state of a rock mass enclosing a complex ore deposit. GIAB. 2015. No. 8. pp. 5–16.
2. Eremenko V. A., Neguritsa D. L. Efficient and active monitoring of stresses and strains in rock masses. Eurasian Mining. 2016. No. 1. pp. 21–24. DOI: 10.17580/em.2016.01.02
3. Karelin V. N., Marysyuk V. P., Nagovitsyn Yu. N., Vilchinsky V. B., Zvezdkin V. A. Research of geomechanical condition of stone massif in the field of mine «Skalisty». Gornyi Zhurnal. 2010. No. 6. pp. 63–65.
4. Galaov R. B., Zvezdkin V. A., Shabarov A. N. Geomechanical substantiation of safe methods of development of tectonically stressed block structures of Talnakh cluster ore deposits. Gornyi Zhurnal. 2013. No. 12. pp. 17–21.
5. Makarov A. B. Practical geomechanics : Mining engineers’ manual. Moscow : Gornaya kniga, 2006. 391 p.
6. Eremenko V. A., Aynbinder I. I., Patskevich P. G., Babkin E. A. Assessment of the state of rocks in underground mines at the Polar Division of Norilsk Nickel. GIAB. 2017. No. 1. pp. 5–17.
7. Galaov R. B., Kisel A. A., Andreev A. A., Zubkov V. V. Pre-stoping assessment of stress state of ore body
S-2 in Skalistaya Mine. Gornyi Zhurnal. 2016. No. 7. pp. 10–13. DOI: 10.17580/gzh.2016.07.02
8. Shabarov A. N., Zvezdkin V. A., Anokhin A. G. Studies of the stress-strain state of intrusion in the process of joint mining of ore deposits of the Oktyabrskiy and Talnakhskiy deposits. Zapiski Gornogo instituta. 2012. Vol. 198. pp. 161–165.
9. Kuzmin E. V., Uzbekova A. R. Rated classifications of rock mass : Background, development, application range. GIAB. 2004. No. 4. pp. 201–203.
10. Zhao Zhipeng, Zhi Junchao. Application and Improvement of Rock Quality Designation (RQD). Applied Mechanics and Materials. 2015. Vol. 744-746. pp. 1371–1373.
11. Aydan Ö., Ulusay R., Tokashiki N. A New Rock Mass Quality Rating System: Rock Mass Quality Rating (RMQR) and Its Application to the Estimation of Geomechanical Characteristics of Rock Masses. Rock Mechanics and Rock Engineering. 2014. Vol. 47, Iss. 4. pp. 1255–1276.
12. Aydan Ö., Ulusay R., Tokashiki N. Rock Mass Quality Rating (RMQR) System and Its Application to the Estimation of Geomechanical Characteristics of Rock Masses. Engineering Geology for Society and Territory : Proceedings of the XII IAEG Congress. Cham : Springer, 2015. Vol. 6. Applied Geology for Major Engineering Projects. pp. 769–772.
13. Santos V., da Silva A. P. F., Brito M. G. Prediction of RMR Ahead Excavation Front in D&B Tunnelling. Engineering Geology for Society and Territory : Proceedings of the XII IAEG Congress. Cham : Springer, 2015. Vol. 6. Applied Geology for Major Engineering Projects. pp. 415–419.
14. Shaposhnik Yu. N., Uskov V. A. Definitions qualitive characteristic (RQD) and rating (RMR) ore mass in the underground drive of the Skalisty mine. Interekspo Geo-Sibir. 2017. Vol. 2, No. 2. pp. 99–107.
15. Pinaev A. V., Pinaev P. A., Vasiliev A. A. Pruuel E. R., Eremenko A. A., Shaposhnik Yu. N. Dynamically heated sulphide ores aerial suspension explosiveness study. Vestnik Nauchnogo tsentra po bezopasnosti rabot v ugolnoy promyshlennosti. 2018. No. 2. pp. 45–51.
16. Eremenko A. A., Eremenko V. A., Bashkov V. I., Konurin A. I. Method of blasting rock. Patent RF, No. 2584167. Applied: 20.02.2015. Published: 20.05.2016. Bulletin No. 14.
17. Galchenko Yu. P., Eremenko V. A., Myaskov A. V., Kosyreva M. A. Solution of geoecological problems in underground mining of deep iron ore deposits. Eurasian Mining. 2018. No. 1. pp. 35–40. DOI: 10.17580/em.2018.01.08.