Mirny Mining and Processing Pant (Mirninsky GOK), PJSC, ALROSA, Mirny, Russia:

A. A. Kovalenko, Director
N. E. Zakharov, Chief Engineer
E. K. Pul, Head of Department

Mirny Polytechnic Institute (Branch), Ammosov North-Eastern Federal University, Mirny, Russia:
V. G. Zolotin, Associate Professor at the Chair of Mining, zolotinvg@alrosa.ru

The article presents basic theoretical and practical research results and experience gained in arrangement of integrated monitoring meant to ensure safe and efficient underground mining of the Internatsionalnaya pipe. The method of mining is top-downward cut-and-fill stoping with cemented backfill. Mining safety is aggravated by two water bodies represented by the flooded mined-out open pit and confined groundwater horizon, as well as by dynamic events. The uniqueness of the deposit, conditioned by the factors which complicate mining, is discussed. The analysis of these factors is given. The actual problems handled in the course of mining are described. The current and planned observations are characterized in brief. The urgent unsolved problems connected with the concurrent existence of two types of dynamic events in the part of the deposit are explained. An emphasis is laid on the absence of appropriate regulatory documentation for mining under conditions of rock and gas outburst hazard.

1. Balland C., Billiotte J., Tessier B., Raingeard A., Hertz E. et al. Acoustic monitoring of a thermomechanical test simulating withdrawal in a gas storage salt cavern. International Journal of Rock Mechanics and Mining Sciences. 2018. Vol. 111. pp. 21–32.
2. Lyashenko V. I. Development of scientific and technical basis for complex-structure rock mass monitoring. Report 2. GIAB. 2017. No. 3. pp. 123–141.
3. Haeri H., Shahriar K., Marji M. F., Moarefvand P. Experimental and numerical study of crack propagation and coalescence in pre-cracked rock-like disks. International Journal of Rock Mechanics and Mining Sciences. 2014. Vol. 67. pp. 20–28.
4. Stoxreiter T., Martin A., Teza D., Galler R. Hard rock cutting with high pressure jets in various ambient pressure regimes. International Journal of Rock Mechanics and Mining Sciences. 2018. Vol. 108. pp. 179–188.
5. Baryshnikov V. D., Baryshnikov D. V., Gakhova L. N. Estimate of subsidence and deformation of ore body undermined by slicing. Fundamentalnye i prikladnye voprosy gornyh nauk. 2016. Vol. 3, No. 1. pp. 265–269.
6. 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.
7. Yunjin H., Guolong C., Weiping C., Zhenjun Y. Simulation of hydraulic fracturing in rock mass using a smeared crack model. Computers and Structures. 2014. Vol. 137. pp. 72–77.
8. Archer J. W., Dobbs M. R., Aydin A., Reeves H. J., Prance R. J. Measurement and correlation of acoustic emissions and pressure stimulated voltages in rock using an electric potential sensor. International Journal of Rock Mechanics and Mining Sciences. 2016. Vol. 89. pp. 26–33.
9. Baryshnikov V. D., Baryshnikov D. V. Modernization and implementation of undermined backfill subsidence monitoring. GIAB. 2008. No. 12. pp. 256–261.
10. Baryshnikov V. D., Baryshnikov D. V. Monitoring roof subsidence in extraction rock block using deepseated plugs. Interexpo GEO-Siber. 2015. Vol. 2, No. 3. pp. 8–12.
11. Baryshnikov V. D., Chaadaev A. S. Geomechanical behavior control in safety pillar under aquifer. Innovative Trends in Mine Planning and Design : V and VI International Scientific–Practical Conference Proceedings. Saint-Petersburg, 2017. 12. Kolganov V. F., Akimov A. N., Drozdov A. V. Mining and Geological Features of Primary Diamond Deposits in Yakutia. Mirny: Mirninskaya tipografia, 2013. 568 p.
13. Baryshnikov V. D., Baryshnikov D. V., Gakhova L. N. Geomechanical condition forecasting and control in a protective pillar under an aquifer in the internatsionalny mine. Fundamentalnye i prikladnye voprosy gornykh nauk. 2014. Vol. 1, No. 1. pp. 44–50.
14. Koltyshev V. N., Shipeev O. V., Filippov V. N. Features of ore mining with backfilling under conditions of rockburst hazard. GIAB. 2017. No. 8. pp. 107–112.
15. Lyashenko V. I., Skipochka S. I., Yalanskiy A. A., Palamarchuk T. A. Efficient instrumentation and procedures to support geomechanical safety of mining. Ferrous Metallurgy. 2012. No. 5. pp. 23–31.