Substantiation of rheological model parameters for salt rock mass

Advancement of the mining industry and the expansion of mining necessarily leads to the involvement of new deep-seated deposits into operation. Russia holds potash deposits оf Upper Kama, Nivenskoe and Gremyachensky in the Perm Krai and in the Kaliningrad and Volgograd areas, respectively. The major difficulty associated with potash mining is the susceptibility of salt rocks to large deformations within the whole life of a deposit. This calls for the reliable prediction of displacements of boundaries in underground excavations having the same life cycle as the mine does, i.e. 50 years and longer. The complicating factor in this respect is the lack of the field observations over boundary displacements in tunnels driven in salt rocks. For this reason, it is necessary to predict the boundary displacements in underground excavations over the whole period of operation of a mine. The prediction reliability directly depends on the problem formulation and on the models of the mechanical behavior of test rock mass. This article proposes a procedure to determine correct rheological parameters for the salt rock deformation models to obtain the qualitative and quantitative values of perimeter displacements. The studies used a phenomenological model implemented in Abaqus CAE environment and the Double Power Law.

Protosenya A. G., Katerov A. M. Substantiation of rheological model parameters for salt rock mass. MIAB. Mining Inf. Anal. Bull. 2023;(3):16-28. [In Russ]. DOI: 10.25018/ 0236_1493_2023_3_0_16.

A.G. Protosenya¹, Dr. Sci. (Eng.), Professor, e-mail: Protosenya_AG@pers.spmi.ru, ORCID ID: 0000-0001-7829-6743,
A.M. Katerov¹, Graduate Student, e-mail: andrey.katerov292@gmail.com, ORCID ID: 0000-0002-8566-4724,
¹ Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia.

A.M. Katerov, e-mail: andrey.katerov292@gmail.com.

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