Principles and economic efficiency of ore mining technology combination

Relevance of the work is caused by the necessity to provide the needs of humanity in mineral resources, doubled every 10 years, and to minimize environmental damage from the disastrous use of chemicals with mining products. The main aim of the research is to study the feasibility and economic efficiency of combining the technologies of exploring ore deposits using tailings and ore leaching to control the state of ore-hosting arrays and involvement previously substandard resources into processing. Methods: the analysis of literature, expert modeling of the parameters of combinable technologies, interpretation of the results of practice, mathematical modeling of production economic parameters. Results. The authors have substantiated technical feasibility and economic efficiency of combining traditional and new technologies to develop ore deposits based on the criterion of technology efficiency, developed the ecological-economic model of efficient use of different strengths filling mixtures based on recyclable tailings and leach technology, recommended the metals leaching technique from substandard raw materials. Geomechanical conditions of combining technologies filling the cavities with mixtures based on tailings and using arrays of tailings of underground leaching were developed. The paper introduces the algorithm for determining the profits of technologies combination. Conclusions. Combination of traditional and new field exploration technologies opens up the possibilities of cost-effective production of sub-standard ores. The use of tailings and leaching in controlling the state of the ore-hosting array is the instrument of combining technologies, which meet the criteria of preserving the earth's surface from destruction. The combination of traditional and new field exploration technologies is a real possibility of improving the economic and environmental indices of exploitation of mineral deposits.