B.V. Laptev, Doctor of Technical Sciences, Senior Research Associate, laptevbv@mail.ru STC «Industrial Safety» CJSC, Moscow, Russia
For description of the links between the deformations and stresses in the analytical form (mathematical models) various mechanical (structural) models of deformation of salt bodies are used. Noted that in the saliferous rocks some geomechanical processes are observed defying understanding from the positions of the considered models. So, plastoelastic deformation in the rocks begin ahead of a moving face, near which two peaks of the increased stresses with load fall between them are formed. At the near contour massive the following is occurring: constant migration of maximum of loads, change of sign of deformation of separate intervals of rocks. Eventually, in the near contour massive the additional maximum of concentration of stresses is relaxing and the significant zone of plastic deformations is formed, and at the edge (at the contour of workings) — the zone of rocks with residual strength.
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