A structure of the natural-technical system (PTS) «Tailings dam» of the iron-ore deposits - decomposition on the categories with different character of the connection processes has been considered. Elementary PTS «Tailings dam» may be allocated into five zones: aerodynamical influence, differentiation of effluent (colmatage), filtration of industrial water (dispersion of dome), zone of chemical components migration, a zone of consolidation, suffusion and gravitation processes. A long standing exploitation of the deposits change boundaries, regimes and set of the processes. It requires permanent correction of the dislocation of the information systems points,as well as of regime and monitoring parameters. Optimal functioning of PTS is provided by control methods, based on the information about theseprocesses.
The influence of the processes of functioning of the local natural-technical systems (NTS) «Stoilenskoe» and «Lebedinskoe» of the KMA deposit on the environment has been studied with the information obtained during the period of last 7—12 years (2004—2015 y.y.). Results of the analyses of time series and obtained trends in the geological components alteration (in particular, a) level of groundwater, b) chemical composition of groundwater, c) engineering and geological processes) have been given. The ways of regime observations optimization concerning their placement and frequency in time have been offered. The proposed way of the assessment of the current state of NTS allows reducing the observations number, without reducing quality of information. The spatial structure and the time mode of monitoring have to be corrected according to the obtained information. The data received from Lebedinskoye and Stoylinskoye fields can be used for design and development of the similar geological fields.
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