Geophysical Center of the Russian Academy of Sciences, Moscow, Russia

V. N. Tatarinov, Head of Laboratory, Doctor of Engineering Sciences, v.tatarinov@gcras.ru
V. N. Morozov, Chief Researcher, Professor, Doctor of Engineering Sciences
A. I. Manevich, Researcher

VNIPIpromtekhnologii, Moscow, Russia
E. N. Kamnev, Academic Secretary, Professor, Doctor of Geological and Mineralogical Sciences

This article describes the methodological aspects and some results of the assessment and prediction of the geodynamic stability of the geological environment as applied to the problem of ensuring the safety of underground isolation of high-level radioactive waste (HLRW) in the geological formations of the Nizhnekansky massif, Krasnoyarsk Region. For this, the authors introduced a basic concept of the stability of the geological environment. Based on instrumental observations, mathematical models, system analysis of geospatial data, the ranking of structural tectonic blocks according to the degree of stability and the geodynamic zoning of the northern part of the Nizhnekansky massif were implemented. To assess the stability, the authors used geological data, a digital elevation model, the results of the interpretation of geophysical fields and geodetic observations. It is shown that the stability of the blocks differs significantly according to kinematic parameters. Geodetic observations based on GPS/GLONASS satellite systems, carried out in 2010-2019, made it possible to obtain for the first time information on the rates of horizontal movements of the lithosphere and their cyclicity for the region located in the zone of force interaction of the largest tectonic structures, namely, Siberian platform, West Siberian plate and the Altai-Sayan Orogen. The maximum speeds were recorded for points located in the zone of dynamic influence of the Muratovsky and Pravoberezhny faults. The energy concentration criteria as the fracturability characteristics of structural rock blocks are proposed for the stress–strain analysis of rock mass. To substantiate the long-term geodynamic safety of deep disposals of HLRW of the 1st and 2nd classes, the authors developed a program for the long-term observations of differentiated movements in the earth’s crust and seismic activity for 2021–2026 in an underground research laboratory.
The study was carried out under the state contract between the Geophysical Center of the Russian Academy of Sciences and the Ministry of Science and Higher Education of the Russian Federation.

1. Disposal of Radioactive Waste: Specific Safety Requirements No. SSR-5. Vienna : International Atomic Energy Agency, 2011. 62 p.
2. International Features, Events and Processes (IFEP) List for the Deep Geological Disposal of Radioactive Waste. Version 3.0. OECD Nuclear Energy Agency, 2019. 165 p.
3. Safety Guidance RB-019-18. Safety Guidance on Nuclear Energy Utilization. Estimation of initial regional seismicity and the nuclear energy use site during engineering survey and study. Approved by the Federal Environmental, Industrial and Nuclear Supervision Service of Russia, Order No. 208, dated may 11, 2018. Available at: http://docs.cntd.ru/document/556827973 (accessed: 15.06.2020).
4. Sadovskiy M. A. Role and implication of discretization in geophysics. Discrete Properties of Geophysical Environment : Collection of Scientific Papers. Moscow : Nauka, 1989.
5. Tatarinov V. N., Morozov V. N., Kolesnikov I. Yu., Kagan A. I. Kinematic method of geodynamic zoning in the design of deep underground deposits. Bezopasnost zhiznedeyatelnosti. 2014. No. 7(163). pp. 8–11.
6. Kochkin B. T., Malkovskiy V. I., Yudintsev S. V. Scientific framework for safety evaluation of geological isolation of long-lived radioactive waste : A case-study of the Yenisei Project. Moscow : IGEM RAN, 2017. 384 p.
7. Morozov O. A., Rastorguev A. V., Neuvazhaev G. D. Assessing the state of the geological environment at the Yeniseyskiy site (Krasnoyarsk region). Radioaktivnye otkhody. 2019. No. 4(9). pp. 46–62.
8. Anderson E. B., Savonenkov V. G., Lyubtseva E. F., Shabalev S. I., Rogozin Yu. M., Alekseev N. L. Results of prospecting and scientific-research works for the choice of sites for underground isolation of high-level radioactive wastes and irradiated fuel at Nizhnekamsk granitoid massif (South-Yenisei log). Proceedings of radium institute named after V. G. Khlopin. Saint-Petersburg, 2006. Vol. 11. pp. 8–64.
9. Gvishiani A. D., Agayan S. M., Dzeboev B. A., Belov I. O. Recognition of strong earthquake–prone areas with a single learning class. Doklady Earth Sciences. 2017. Vol. 474, No. 1. pp. 546–551.
10. Morozov V. N., Kolesn ikov I. Yu., Tatarinov V. N. Modeling the Hazard Levels of StressStrain State in Structural Blocks in Nizhnekanskii Granitoid Massif for Selecting Nuclear Waste Disposal Sites. Water Resources. 2012. Vol. 39, No. 7. pp. 756–769.
11.Gvishiani A. D., Agayan S. M., Bogoutdinov Sh. R. Investigation of systems of real functions on  twodimensional grids using fuzzy sets. Chebyshevskiy sbornik. 2019. Vol. 20, No. 1. pp. 94–111.
12. Martin C. D. R-07-26. Quantifying in situ stress magnitudes and orientations for Forsmark. Forsmark stage 2.2. Stockholm : Swedish Nuclear Fuel and Waste Management Co, 2007. 89 p.
13. Chandler N. A., Rodney S. R., Martin C. D. In Situ Stress Measurement for Nuclear Fuel Waste Repository Design. Proceedings of the 2^nd North American Rock Mechanics Symposium. Montreal, 1996. pp. 929–936.
14. Batugina I. M., Batugin A. S. Experience in the use of geodynamic zoning for geo-environmental problem. GIAB. 2014. Proceedings of international scientific symposium “Miner’s Week-2014”. pp. 228–233.
15. Andersson J. Ch., Martin C. D. The Äspö pillar stability experiment: Part I – Experiment design. International Journal of Rock Mechanics & Mining Sciences. 2009. Vol. 46, Iss. 5. pp. 865–878.
16. Haapalehto S., Malm M., Kaisko O., Lahtinen S., Saaranen V. Results of monitoring at Olkiluoto in 2018, Rock mechanics : Workin Report 2019-47. Posiva Oy, 2020. 126 s.
17. Jahr Th. Non-tidal tilt and strain signals recorded at the Geodynamic Observatory Moxa, Thuringia/Germany. Geodesy and Geodynamics. 2018. Vol. 9, Iss. 3. pp. 229–236.
18. Kaftan V. I., Gvishiani A. D., Morozov V. N., Tatarinov V. N. Methods and results of determination of movements and deformations of the Earth's crust according to GNSS data at the Nizhne-Kansk geodynamic test network in the area of radioactive waste disposal. Sovremennye problemy distantsionnogo zondirovaniya Zemli iz kosmosa. 2019. Vol. 16, No. 1. pp. 83–94.