| Autor: |
Oleksii Tiutkin, Nataliia Bondarenko |
| Jazyk: |
angličtina |
| Rok vydání: |
2022 |
| Předmět: |
|
| Zdroj: |
Acta Technica Jaurinensis, Vol 15, Iss 4, Pp 199-206 (2022) |
| Druh dokumentu: |
article |
| ISSN: |
2064-5228 |
| DOI: |
10.14513/actatechjaur.00681 |
| Popis: |
An analysis of analytical and numerical approaches to the problem of determining the stress-strain state of underground workings has been carried out. A system of parametric analysis of the stress-strain state of unsupported and supported horizontal underground workings has been developed. This system proved that to determine the stress-strain state of horizontal unsupported workings of a certain diameter, it is enough to perform one numerical calculation of a finite-element model with unit parameters, and using simple analytical formulas, extrapolate the stress-strain state of this model to all possible cases of real workings. Finite element models of underground workings were developed to justify the author’s system. A method of parametric analysis of the strained state of a supported working by using models with equivalent bending stiffness has been developed and substantiated. On its basis, it is possible to perform a numerical analysis of a finite-element model with unit parameters of the frame, selecting the equivalent modulus of elasticity. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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