Burchak O. Development of the theory and development of a physicochemical model of anomalous methane emissions in coal mines.

The purpose of the work is the further development of the theory and the development of the physico-chemical model of abnormal methane emissions in mines on the basis of determining the mechanisms and conditions for the activation of structural transformations in coal in the process of carbonification to prevent unpredictable methane emissions and the creation of new technologies for the extraction of hydrocarbon energy. The object of research is the phenomena of abnormal methane emissions in mines and mechanisms for the separation of gases by coal. Research methods. In the work the complex method of research is applied, which includes analysis and generalization of the existing information on the problem and theoretical research questions based on the principles of thermodynamics; natural experimental studies; laboratory verification of the obtained data by physical modeling of processes in the coal substance at the atomic-molecular level under external influence using modern physical methods for studying the structure and energy state of the coal substance; mathematical methods for processing research results. To develop a physico-chemical model of methane formation in coal mines, a new methodological approach was used to study structural transformations in a coal substance at the atomic-molecular level. The scientific significance of the work lies in the new methodological approach to the study of the state and properties of metastable carbonaceous organic matter, which allows studying the conditions and mechanisms of structural transformations of coal at the molecular level; in determining the relaxation nature and the free-radical mechanism of the transformation of the molecular structure of coal, the consequence of which are both abnormal methane emissions and current methane release; in the new physico-chemical model of abnormal methane emissions in mines and the current generation of coal gas and the development of the theory of natural structural transformations of coal under the stochastic influence of geomechanical factors. Practical value: Methodology Research and evaluation results methane emissions properties of coal EPR includes part of the regulations SCR of Ukraine, "Methodical recommendations on geological exploration gas content of coal beds and enclosing rocks for the calculation of reserves and resource assessment gas (methane) of coal deposits in the subsoil". Developed "Methodology of experimental studies of magnetic properties depending on the type of coal matter and energy external action". The "Complex methodology of prediction of gas-dynamic zones" was developed. Implementation of the research results: "Complex methodology of prediction of gas-dynamic zones" was transferred to the mine "Pivnichna" of the SE "Toretskvugillya". The expected economic effect from the implementation of the method is 529500,00 UAH. The savings are achieved at the expense of cost reduction of the estimation of the limiting sorption capacity of the coal substance, which is one of the indicators used in the forecast of hazardous zones of the coal beds (Act of implementation of the results of November 17, 2016). To the state regional geological enterprise "Donetskgeology" the "Conclusion on the results of the research of samples taken at the well D-55 at the mine" Zapadno-Donbasskaya", block number 3" with the data on the limit sorption capability of the selected samples. A new methodological approach to the study of the state of a gas-bearing of coal and processes in coal has been proposed. It was used in carrying out scientific research on the conditions for the formation of gas bearing capacity of coal at the Institute of Geological Sciences of the National Academy of Sciences of Ukraine. The results of scientific research were used in the study of structural features of coal in the Institute of Mining Processes Physics of the National Academy of Sciences of Ukraine.