VISUALIZATION OF THE EXPERIMENTAL STUDY OF HEMISPHERICAL FOUNDATIONS WITH PROTRUDING CANTILEVERS ON A SUBSIDING BASE IN COAL DEPOSITS USING VOSVIEWER

A bibliometric analysis was conducted to map the scientific landscape of research on hemispherical foundations with protruding cantilevers on subsiding bases in coal mining regions. Based on Web of Science data for the period 2020–2025, 66,651 publications were analyzed using VOSviewer software (version 1.6.15). Co-occurrence networks of keywords (Author Keywords and Keywords Plus) were constructed, followed by clustering with a threshold of ≥4 occurrences and an additional constraint of ≥100 links per cluster.

A total of 300 most frequent terms were identified, dominated by: model, permeability, mine, numerical modeling, deformation, methane, ground subsidence, coal mining, stress, behavior, stability. Comparison of author-assigned keywords and Keywords Plus revealed differences in focus: authors tend to use more specific terms (hydraulic fracturing, water injection into coal seam, InSAR), while Keywords Plus reflect broader aspects (fractal dimension, permeability enhancement, stress evolution).

The analysis highlights the interdisciplinary nature of the topic at the intersection of geotechnical engineering, mining, and computational mechanics, emphasizing the critical role of numerical modeling, hydro-mechanical interactions, and deformation monitoring (including InSAR) for predicting foundation behavior under mining-induced subsidence. Promising research directions include optimization of cantilever geometry, long-term stability assessment, and integration of machine learning methods.

The findings can serve as a methodological foundation for systematic reviews and the development of more reliable foundation design approaches in coal-mining regions, helping to reduce risks associated with ground subsidence.