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ArticleName Justification of functional organization and contents of modeling cluster concept for geomechanical research of convergent mining technologies
DOI 10.17580/em.2021.02.03
ArticleAuthor Galchenko Yu. P., Eremenko V. A., Vysotin N. G., Kosyreva M. A.

NUST MISIS College of Mining, Moscow, Russia:

Galchenko Yu. P., Expert, Doctor of Engineering Sciences, Professor
Eremenko V. A., Director of Research Center for Applied Geomechanics and Convergent Mining Technologies, Doctor of Engineering Sciences, Professor of the Russian Academy of Sciences,
Vysotin N. G., Senior Lecturer
Kosyreva M. A., Post-Graduate Student


The new scientific school on the nature-like convergent mining technologies, which assume preventive negotiation of geomechanical consequences of mining-induced damage in the lithosphere, requires adjustment of the conventional modeling methods using the factor of time. In the framework of the main theories of similarity, the comparative studies of different model material composition are carried out, and the formula of solidifying mixtures is justified for equivalent materials for modeling joint loading of manmade and natural components of geotechnical systems. An original procedure is proposed for the construction of block models by means of gluing, such that the unit block sizes are determined in terms of sizes blocks generated by joint systems, and the number and location of gluing points are selected as function of condition of healed joints. The new procedure efficiency is checked by the method of calibration and comparison of the modeling data with the quantitative assessments of the real-life rock masses. For different mining systems, the interpolating functions of the influence factor are plotted to image the rock mass stability categories. The new instrumentation is created for the integrated test workbenches, which provides integrated patterns of strength, deformation and acoustic characteristics of physical models of the proposed convergent geotechnical systems, the obtained values of the strength and deformation characteristics of the physical models made it possible to calibrated the relevant numerical models based on the retrospective analysis of deformation process evolution. It has been proved for the first time that the values of microstrains can be used as the indicators of the secondary stress field in the structure of anthropogenically altered subsoil as an independent object in the lithosphere.
The study was supported by the Russian Science Foundation, Project No. 19-17-00034.

keywords Convergent mining technologies, geomechanics, secondary stress field, similarity theory, modeling, clusters, procedure, model material, calibration, experiment

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