Authors: M.A. Vlasov, O.V. Gerasimov, S.M. Prostov

Title of the article: Features of the geological structure of the soil base of the installation of the main ventilation of the mine under construction

Year: 2025, Issue: 2, Pages: 5-21

Branch of knowledge: 1.6.9. Geophysics, geophysical methods of prospecting for minerals

Index UDK: 624.131.7

DOI: 10.26730/1999-4125-2025-2-5-21

Abstract: The description of the mining engineering facility, unique in terms of mining and geological conditions, is given, characterized by the fact that, according to the map A of the OSR-2015, it has a seismicity of 7 points and belongs to the objects of man-made character. The methodology of engineering and geological surveys is described, according to the results of which it is established that the main cause of dangerous deformations of the foundations of structures is the presence of a weak bearing layer of the base and the heterogeneous location of soils. The plan and section of the foundation for the installation of a fire protection folding door and a main ventilation fan of the mine under construction are given. Geological and lithological columns for two wells No. 23 and No. 24 with engineering-geological elements and physico-mechanical properties of soils are described. From the results of engineering and geological surveys of the well column No. 23, it follows that the foundation of the for the installation of a fire protection folding door is located on a weak foundation of bulk soil and coal, which contributes to increased deformations and displacements, the occurrence of a roll of the foundation plate. From the data on the well column №24, the foundations of the main ventilation fan are located on an inhomogeneous soil base, which contributes to the occurrence of deformations and its uneven precipitation. The existing load from the weight of the main ventilation fan contributes to an increase in pressure at the edges of the foundation plate. Based on the analysis of the features of the geological structure of the ground base of the facility, two geomechanical models were developed to strengthen the fire protection folding door and the main ventilation fan. Calculation schemes are presented in the form of plans and sections of a volumetric geomechanical model with the location of injectors and fixing zones of the base. According to the results of geomechanical calculations, the fields of the vertical displacement contour are presented for two states of the soil base, the natural base and after fixation.

Key words: mining engineering engineering and geological surveys geological and lithological columns of wells engineering and geological elements computer geomechanical modeling

Receiving date: 14.10.2024

Approval date: 22.01.2025

Publication date: 11.06.2025

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