MODELING STRAIN STATE OF UNDERGROUND EXCAVATIONS WITH REGARD TO CHANGE IN THE GRAVITY FIELD
V. E. Mirenkov
Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia
Keywords: Underground excavation, intact rock mass, boundary conditions, calculation, stresses, displacements
Abstract
Studying of rock mass deformation with weak zones is based on the principal property of applied nature that limits incorrectness: the influence of an underground excavation on the stresses and displacements in rock mass attenuates to zero as the distance increases - this is a postulate. The author suggests reducing the problem to solving an additional problem on tensile stresses at the underground excavation boundary to ensure uniqueness and correctness of the elastic solution.
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