Improvement technique for manufacturing equivalent materials for modeling nonlinear geomechanical processes in underground mineral mining

Modeling makes a major part in most research activities at present time. Physical modeling as a method of research enjoys wide application in mining as it allows simulation of geomechanical processes that take place during mineral extraction. This article discusses ways of improving manufacture of equivalent materials for modeling nonlinear geomechanical processes. Modern mix formulations of equivalent materials fail to model certain types of rocks. It is necessary to adjust mix formulations with a view to creating strong but low-modulus materials, or low-strength but highly deformable materials. Such mix formulations enable reproduction of characteristics analogous to rock salt, sylvinite or carnallite, for instance. The scope of the discussion embraces a review of different equivalent materials and their mix formulations used by researchers. The scientific novelty of the study consists in development of additives capable to adjust strength and deformation characteristics of equivalent materials. Furthermore, the influence of grain size composition on strength of equivalent materials is analyzed. The influence of additives on strength of equivalent materials is determined in uniaxial compression tests. The developed mix formulations make it possible to create models for predicting displacements of above-lying rock layers and ground surface.

Kholodilov A. N., Istomin R. S., Kirilenko V. I. Improvement technique for manufacturing equivalent materials for modeling nonlinear geomechanical processes in underground mineral mining. MIAB. Mining Inf. Anal. Bull. 2024;(10):108-122. [In Russ]. DOI: 10.25018/0236_1493_2024_10_0_108.

A.N. Kholodilov¹, Dr. Sci. (Eng.), Assistant Professor, SC 6508201121, e-mail: Kholodilov_AN@pers.spmi.ru,
R.S. Istomin¹, Cand. Sci. (Eng.), Assistant Professor, SC 56331276900, e-mail: istomin_RS@pers.spmi.ru,
V.I. Kirilenko¹, Graduate Student, e-mail: s235055@stud.spmi.ru, ORCID ID: 0009-0006-3435-3770,
¹ Empress Catherine II Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia.

A.N. Kholodilov, e-mail: Kholodilov_AN@pers.spmi.ru.

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