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4_2023_sen_11

Title of the article ON THE INFLUENCE OF LONGWALL MINING ON THE DEFORMATION OF THE OPERATIONAL EXCAVATIONS
Authors

POLYAKOV Andrey L., Ph. D. in Eng., Assoc. Prof., Director, Unitary Enterprise “Institute of Mining”, Soligorsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

LAPATSIN Siarhei N., Ph. D. in Phys. and Math., Senior Lecturer of Theoretical and Applied Mechanics Department, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

MOZGOVENKO Maksim S., Research Fellow, Unitary Enterprise “Institute of Mining”, Soligorsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.

RACHKOVSKIY Maksim A., Junior Researcher Trainee of Applied Mechanics Laboratory, Belarusian State University, Minsk, Republic of Belarus, This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it.
In the section GEOMECHANICS
Year 2023
Issue 4(65)
Pages 97–105
Type of article RAR
Index UDK 539.3; 622.281.74+51-74
DOI https://doi.org/10.46864/1995-0470-2023-4-65-97-105
Abstract The paper presents the results of numerical modeling of the geomechanical behavior of the system “lava — operational excavation — enclosing potash rock mass” during mining operations. Numerical modeling includes a forecast of the mechanical behavior of the system at all stages of the system existence: from the natural stress-strain state (SSS) of the rock mass to excavation and safety measures installation, as well as the longwall mining operations. The results of numerical experiments are verified using the data from field studies of convergence of the roof and floor of the operational excavation and the side walls of this excavation. As a result of the studies, it is established that longwall mining has a significant impact on the operational excavation at a distance of about 40 m or less. In addition, the paper describes an algorithm for numerical simulation of the geomechanical behavior of the considered geotechnical system.
Keywords operational excavation, longwall mining, convergence, finite element method, computer-aided modeling, stress-strain state of rock mass with an underground structure
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