Authors: V.V. Aksenov, A.I. Kopytov, D.A. Pashkov, A.A. Wetti

Title of the article: Numerical modeling of stress-strain state changes in wedge protective shelf elements in CAE FIDESYS

Year: 2026, Issue: 3, Pages: 128-140

Branch of knowledge: 2.8.8. Geotechnology, Mining machines (engineering)

Index UDK: 629.232

DOI: 10.26730/1816-4528-2026-3-128-140

Abstract: During the reconstruction of mining enterprises, an important task is to combine the deepening of the vertical shaft with the operation of the production hoist, which delivers mined material to the surface. Shaft deepening is a key stage of reconstruction, as only after its completion does it become possible to carry out development and preparatory work on the underlying horizons, providing access to new mineral reserves. Under these conditions, the safety of miners is ensured by protective shelves that absorb impact loads from the technological spillage of mined material occurring during the operation of the loading device or during emergency self-dumping of skips. Existing methods for determining impact loads on protective shelves rely mainly on empirical relationships involving a significant number of difficult-to-determine coefficients. This reduces the accuracy of calculations and limits their applicability in modern engineering practice. Improving the reliability of load assessment requires the use of mathematical modeling and modern numerical methods. In this study, the stress-strain state of the elements of a wedge-shaped protective shelf was determined using the domestic CAE platform FIDESYS. The application of this software package made it possible to perform a structural strength analysis, improve calculation accuracy, and substantiate the parameters of the protective shelf for the conditions of the "Skipovoy" shaft at the "Sheregeshskaya" mine (JSC "EVRAZ ZSMK"). Based on the simulation results, the stresses in the main structural elements of the wedge safety shelf were determined. For the upper safety shelf, a decrease in the stress level was detected with an increase in the height of particle discharge (by 40.88% in the shock-absorbing device, by 67.72% in the buffer plate and by 59.73% in the load-bearing element). At the same time, an increase in stresses was detected for the elements of the lower safety shelf (by 148.22% in the shock-absorbing device, 97.93% in the buffer plate and 80.83% in the load-bearing element) associated with the redistribution.

Key words: Vertical shaft skip hoist wedge-shaped protective shelf emergency spillage FEM CAE FIDESYS virtual modeling

Receiving date: 13.02.2026

Approval date: 15.05.2025

Publication date: 04.06.2026

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