Hydrogeological conditions and geoecological situation in the territory of underground technogenic storage facilities for drainage brines utilization
The development of primary diamond deposits in Yakutia involves significant amounts of associated highly mineralized effluents, therefore, their safe disposal is the cornerstone of ensuring favorable ecological situation. A targeted change in the permafrost-hydrogeological conditions on the underground landfills of the drainage waters of the Udachny Mining and Processing Division of ALROSA allows for diamond extraction and has unique and justified impact on the underground cryohydrosphere in the broadest sense of the term. However, the complexity and dynamics of the cryogenic hydrogeological situation, the increase in the volume of water flow into the mine workings and the likely capacity excess of drainage brine tank reservoirs increase environmental risks. The abiotic components of the ecosystem reflect variations in the biogeochemical parameters of natural and technogenic geochemical anomalies. The spatial distribution of the microelement composition of soils, sediments and surface waters is characterized by increased concentrations of a wide range of elements: Cr, Ni, Co, Ti, Cu, Y, Nb, Li, Be, Sr, with Sr and Li being the markers of highly mineralized groundwater.