№85-10
Study of the stress-strain state of a resource-saving support system for a development working at different stages of operation
V. Ruskykh1, https://orcid.org/0000-0002-5615-2797
I. Filippov1 https://orcid.org/0009-0009-3905-865X
1Dnipro University of Technology, Dnipro, Ukraine
Coll.res.pap.nat.min.univ. 2026, 85:127–139
Full text (PDF)
https://doi.org/10.33271/crpnmu/85.127
ABSTRACT
Purpose. Study of the stress-strain state of a resource-saving support system for a development drift during various stages of operation.
The methods. An analysis of the stress-strain state of the “rock mass–support” system was performed using the finite element method with the SolidWorks Simulation software package for conditions at the Samarska Mine PJSC DTEK Pavlogradvugillya, taking into account the mining and geological conditions, the physical and mechanical properties of the rock, and the parameters of the frame-anchor support. The stress distribution in the surrounding rock mass and support elements at various stages of the working face’s operation was analyzed: outside the influence of mining operations, in the zone of bearing pressure, and after the mining face has been passed through.
Findings. Numerical simulations have revealed patterns in the evolution of the stress-strain state of the “rock mass–support” system at various stages of the development drift’s operation. It was determined that at the initial stage of operation, the rock mass is predominantly in an elastic state, and the main stress concentrations are localized in the lateral parts of the drift and in the support nodes of the frame support. As the working face approaches, there is a significant increase in vertical and equivalent stresses, processes of rock stratification in the roof and floor intensify, and maximum stresses in the frame support elements reach 300 MPa. After the longwall has passed, the formation of an asymmetric stress field and partial unloading of the support elements due to the operation of the safety system are observed, accompanied by a reduction in stresses to 200–220 MPa.
The originality. For the first time, patterns of change in the stress-strain state of the rock mass surrounding a development drift equipped with a resource-saving support system have been established at various stages of its operation, which has made it possible to determine the nature of stress redistribution and the development of plastic deformation zones depending on the conditions of drift support.
Practical implications. The results of these studies provide a basis for determining optimal parameters for a resource-efficient support system for development drifts at the Samarska Mine and can be applied in the design and construction of drifts under complex mining and geological conditions.
Keywords: mining, rock massif, roadway support, stress-strain state, preparatory mining, resource-saving support.
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date of first submission of the article to the publication – 04/02/2026
date of acceptance of the article for publication after review – 05/04/2026
date of publication – 06/30/2026