DISTRIBUTION OF TOXIC AND POTENTIALLY TOXIC ELEMENTS IN THE COAL OF THE LAYER С7Н OF THE "PAVLOGRADSKAYA" MINE OF PAVLOGRADSKO-PETROPAVLOVSKIY GEOLOGICAL AND INDUSTRIAL DISTRICT

Abstract

Increasing requirements for environmental protection and influence accounting of coal-mining enterprises on the ecological situation stipulates the need for new scientifically grounded methods for forecasting the content of toxic and potentially toxic elements (TaPTE) in rock mass, mining waste and coal enrichment which is mined in mines. In the article, the results of investigations of TiPTE in coal layer с7н of "Pavlogradskaya" mine field of Pavlograd-Petropavlovsk geological and industrial region of Donbass are considered.The research aims to establish regularities in the distribution of TaPTE in the coal layer с7н. As a result of the performed studies, the content variations and average concentrations of TaPTE in the coal of the layer were established, maps of the isoconcentrate of TaPTE and maps of the regional constituent of their contents by the area were constructed. The constructed maps are the factual basis for the long-term forecast of the concentrations of TaPTE in the rock mass extracted in mines. Linear regression equations are calculated between the concentrations of toxic and potentially toxic elements and the main technological parameters. These equations can be used for short-term and medium-term forecasting and controlling the contents of TaPTE in the extracted rock mass. In its turn, long-, medium- and short-term forecasts of TaPTE concentrations in extracted rock mass should serve as the basis for technological solutions aimed at reducing their content in coal mining products, products and waste coal. Analysis of the result of statistical processing of geochemical information and geological and structural characteristics of the layer с7нof mine field of "Pavlogradskaya" mine allowed us to establish, that the formation of the association of cobalt, nickel, vanadium, lead, chrome and manganese is associated with the enrichment of contact zones of the coal layer by these elements and is genetically due to influence of adsorption and reductiveoxidative barriers on the migration of matter during the diagenesis and catagenesis of coal-bearing series. It is proved that beryllium is the only element, mainly associated with the organic constituent of coals. The association of mercury and arsenic is due to their genetic connection with the sulfide mineralization of fractured zones of tectonic nature. The main scientific importance of the results of the performed studies is the establishment of genetic causes that have a significant effect on the distribution of TaPTE in coal layer of с7н.