Численный прогноз температурного режима гидротехнических сооружений горных предприятий в условиях криолитозоны = Numerical forecast of the temperature regime of hydrotechnical structures of mining enterprises under the conditions of permafrost

The necessity of a preliminary assessment of the intensity of thermal processes occurring in frozen soils with inclusions of buried ice in the design of structures of the surface complex of open-pit mines in the permafrost zone has been substantiated. Itis emphasized that special attention should be paid to objects that have a warming effect,in particular, settling ponds intended for the purification of quarry and dump waters in the summer period of operation. In order to assess the possibility of placing and subsequent construction of such structures on sites built up with high ice soils, as well as rational modes of their operation, multivariate numerical experiments were carried out on the developed mathematical model. The results of studies are presented that confirm the possibility of placing and constructing settling ponds on sites with ice lenses in the bottom, subject to seasonal (only in summer) operation. Requirements for the rational operation of settling ponds have been developed, the observance of which ensures longterm stability and trouble-free operation of all facilities of the treatment complex in the summer in permafrost conditions.