The aspects of setting up a number of consequent problems about propagation of flow, its deceleration up to halting and subsequent inverse loading are discussed using the example of the simplest of all the possible boundary problems of large strains of elastoviscoplastic environment theory about the deformation of a heavy layer situated on an inclined plane. In the case of inverse loading, the level of accumulated irreversible strains may decrease. The case of instantaneous removal of the loading pressure and some particulars of the interaction of the occurring wave with the elastoplastic boundary are also considered.
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