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Dastan Zh. Akmatov
Dastan Zh. Akmatov
Junior Researcher
Geophysical Center of the RAS
National University of Science and Technology “MISIS”
Junior Researcher
Geophysical Center of the RAS
Moscow
Russia
National University of Science and Technology “MISIS”

Articles

Geology
  • Date submitted
    2022-10-29
  • Date accepted
    2023-10-25
  • Online publication date
    2024-02-26
  • Date published
    2024-04-25

Assessment of rock massif sustainability in the area of the underground research laboratory (Nizhnekanskii Massif, Enisei site)

Article preview

The study presents the results of the research on geodynamic and geological conditions of the Enisei site (Krasnoyarsk Krai), chosen for the construction of an underground research laboratory. The laboratory is being built at a depth of 500 m to assess the suitability of the rock mass for burying high-level radioactive waste. The rocks consist of weakly fractured gneisses, granites, and dikes of metadolerites. Field observations were conducted on bedrock outcrops. They included the determination of rock mass quality indicators, measurement of rock fracturing, and a rating classification of stability using N.Barton's method. GNSS observations were also made to monitor surface deformations. These data were used to develop a three-dimensional structural model, including lithology, fault disruptions, intrusive bodies, elastic-strength properties of rocks, and the sizes of zones influenced by faulting. It will serve as a basis for boundary conditions and the construction of three-dimensional variational models of stress-strain states, identifying zones of concentration of hazardous stresses, and planning in situ geomechanical experiments in underground mines of the laboratory. The obtained values of the modified QR index for the main types of rocks allowed their classification as stable and moderately stable, corresponding to strong and very strong rocks on Barton's scale and the massif rating according to geomechanical classification.

How to cite: Akmatov D.Z., Manevich A.I., Tatarinov V.N., Shevchuk R.V., Zabrodin S.M. Assessment of rock massif sustainability in the area of the underground research laboratory (Nizhnekanskii Massif, Enisei site) // Journal of Mining Institute. 2024. Vol. 266. p. 167-178. EDN ECCWUV