Engineering Physics Annotation << Back THE STUDY OF HYDRODYNAMIC PROCESSES AT THE INITIAL STAGE OF RECOVERY OF THE ARRAY OF PERMAFROST IN THE DEVELOPED SPACE Yu.P. GALCHENKO, E.D. YAKUSHEVA One of the promising directions of development of Geotechnology of underground mining of ore deposits of the Arctic and subarctic is the formation of a closed cycle of treatment of large and fine solid waste by recreating in the developed space permafrost array of these wastes. Hydraulic is based on the assumption of the laminar state of all flows. Then the General physical model of the process of filling the real chamber of the solid component of the pulp can be represented in the form of two local models, reflecting the differences in the nature of the processes of phase separation and filling the volume of the solid component. Given the obvious symmetry of the structure in the horizontal plane, the first stage can be limited to the consideration of a fl at problem. As a physical model of the process, a model of a constrained joint incidence of groups of particles in a liquid is adopted. In this case, the hydrodynamic conditions of the fl ow around each particle by the liquid change dramatically (in comparison with the free fall). The value of the gradient of the relative velocity of the counter flows between the particles increases and, as a result, the tangential forces acting on each of them increase. This technological scheme makes it possible to completely solve all environmental problems associated with enrichment waste, and to abandon the hydrotransport of solids to the place of storage, on the earth’s surface, by creating a closed cycle of circulation of this substance within the mining and processing complex. Key words: permafrost; underground mining; miners; Geotechnology; closed loop; solid waste; pulp; goaf; bookmark; dehydration; recovery. DOI: 10.25791/infizik.04.2019.611 Contacts: E-mail: schtrek33@mail.ru Pp. 30-37.