Deformation Criterion of Salt Rock Failure
V. N. APTUKOV1,2
1Perm State National Research University, ul. Bukireva 15, Perm, 614000 Russia
2Galurgia JSC, ul. Sibirskaya 94, Perm, 614000, Russia
Keywords: деформационный критерий разрушения, соляные породы, потеря несущей способности, численное моделирование, deformation criterion, failure, salt rocks, strength loss, numerical modeling
Abstract
The author offers a new deformation criterion for the compressive strength of salt rock specimens. The limiting principal strain is a function of stress parameter in the form of a ratio of hydrostatic pressure and stress intensity. The safety factor based on the deformation criterion is defined. The numerical modeling of experimental compression of various geometry specimens produces the deformation criterion for sylvinite and carnallite of Upper Kama deposit. The offered criterion is applicable to assessment of load-bearing capacity of stopes in salt rocks.
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