Substantiation of Rational Parameters of Rock Salt Extraction in High-Altitude Conditions Using Environmentally Friendly Combined Geotechnologies

Abstract

The article is devoted to solving the problem of choosing and justifying rational parameters of rock salt extraction in high-altitude conditions. The Chon-Alai rock salt deposit, located at an altitude of 3,200 meters from sea level, was considered as an object of research. The deposit is characterized by complex mining and geological conditions, and its physico-mechanical properties are suitable for obtaining fodder and edible salt. According to the results of the research, the optimal parameters of the dissolution of rock salt were determined. Taking into account the geological and mining conditions of the deposit, resource-saving and environmentally safe methods of integrated phased development of the deposit have been developed. It is recommended to extract salt at the initial stage by evaporation of brine from natural springs that carry salt from the depth of the deposit; at the second stage by the quarry method and at the third stage by underground dissolution using drilling wells. The first and last of them are characterized by minimal environmental consequences for the environment. The results obtained contribute to the enrichment of world experience in the development of high-altitude mineral deposits with environmentally friendly combined geotechnological methods consistent with the principles of sustainable development.