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Vol 240
Pages:
628
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Method for predicting the stress-strain state of the vertical shaft lining at the drift landing section in saliferous rocks

Authors:
M. A. Karasev1
M. A. Buslova2
M. A. Vilner3
T. T. Nguyen4
About authors
  • 1 — Saint-Petersburg Mining University ▪ Orcid
  • 2 — Saint-Petersburg Mining University
  • 3 — Saint-Petersburg Mining University
  • 4 — Saint-Petersburg Mining University
Date submitted:
2019-07-13
Date accepted:
2019-08-31
Date published:
2019-12-25

Abstract

The article proposes a method for predicting the stress-strain state of the vertical shaft lining in saliferous rocks at the drift landing section. The paper considers the development of geomechanical processes in the saliferous rock in the landing area, the support is viewed as a two-layer medium: the inner layer is concrete, the outer layer is compensation material. With this in view, the paper solves the problem of continuum mechanics in a spatial setting, taking into account the long-term deformation of salts and the compressibility of the compensation layer. Long-term deformation of saliferous rocks is described using the viscoplastic model of salt deformation into the numerical model, and the crushable foam model to simulate the deformation of the compensation layer. This approach considers all stages of the deformation of the compensation layer material and the development of long-term deformations of saliferous rocks, which makes it possible to increase the reliability of the forecast of the stress-strain state of the vertical shaft lining.

10.31897/pmi.2019.6.628
Go to volume 240

References

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  5. Ermashov A.O. Geomechanical substantiation of calculations of the subsidence of the earth's surface in the extraction of
  6. potassium-magnesium ores (on the example of the Verkhnekamskoye deposit of potassium-magnesium salts). Avtoref. dis. … kand. tekhn. nauk. Gornyi institut UrO RAN. Perm, 2015, p. 20 (in Russian).
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  10. Shakhtnoe stroitel'stvo. 1982. Vol. 9, p. 12-14 (in Russian).
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  13. Nikolychuk K.A. Deformation and fauilure of rock salts as an element of vertical shaft lining design: Avtoref. dis. … kand. tekhn. nauk. VNIMI. Leningrad, 1978, p. 23 (in Russian).
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  17. the parameters of the combined lining on the stability of mine shafts in salt rocks. Izvestviya vuzov. Gornyi zhurnal. 2014. Vol. 7, p. 43-47 (in Russian).
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