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PRACTICAL GEOMECHANICS. GEOPHYSICAL RESEARCH
ArticleName Ground subsidence prediction from deformation measurements in roadways
DOI 10.17580/gzh.2023.11.01
ArticleAuthor Baryakh A. A., Evseev A. V., Glebova P. A., Vasilieva E. L.
ArticleAuthorData

Mining Institute of the Ural Branch of the Russian Academy of Sciences, Perm, Russia

A. A. Baryakh, Research Supervisor, Academician of the Russian Academy of Sciences, Doctor of Engineering Sciences, bar@mi-perm.ru
A. V. Evseev, Researcher, Candidate of Engineering Sciences
P. A. Glebova, Junior Researcher
E. L. Vasilieva, Junior Researcher

Abstract

Ground deformation prediction and control is a high priority in salt mi ning supervision. This is conditioned by the essentiality of safety of the civil and industry facilities in the undermined areas, and by the fact that this information is the framework for the engineering criteria of safety of impermeable strata and mine protection from flooding. This article proposes a real-time technological and methodical chart of the ground subsidence prediction and control on the basis of in-situ measurement of horizontal convergence in roadways. It is found that horizontal and vertical deformation of rib pillars feature to a steady correlation. The analysis of representative experimental data shows that the ground subsidence velocity is governed by the sum of the vertical deformations of rib pillars in the mined-out seams. The advantages of this procedure are its promptness, low labor input and the ability to evaluate contribution made by each workable seam mining in the deformation intensity and displacement of undermined rock mass, which is extremely important for identifying measures of mine protection from flooding. Furthermore, in terms of the parametric provision of the mathematical stress–strain analysis of undermined rock mass in time, it becomes possible to verify the function of creep for each workable seam, which greatly improves reliability of geomechanical predictions.
The study was supported by the Ministry of Science and Higher Education of the Russian Federation, Registration No. 122012000403-1.

keywords Room-and-pillar mining, ground subsidence, rib pillar deformation, in-situ measurements, mathematical modeling
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