Pymonenko D. Justification of geomechanical parameters of estimation methane workability the operating and closed mines.

The dissertation objective is to justification of geomechanical parameters that characterize heterogeneity of gas distribution in a coal-rock mass, to identify perspective areas for methane extraction on operating and closed mines. The object of the research is processes of forming of gas-saturated areas in coal-rock mass. Methods of the research. In dissertation work the implementation complex of researches that includes: study of regularity change plastic and brittle deformations of coal seams at regional level. For this purpose data on the angles of dip rocks were collected, parameters of folded and discontinuous dislocations, calculated indicators and constructed the schemes of plastic and brittle dislocations at Donbass at regional level, maps of gradients of local structures and thickness sandstone (within separate mines), discontinuous breakdown. For development of physical model theoretical researches of the formation of stress-strain state rock mass are carried out. For justification of geomechanical parameters that in numerically characterize the degree of gas saturation operating and closed mines, were collected and the generalized information after the passports of mines and geology industry maps (approximately for 120 mines), after the maps discontinuous and folded breakdown there are the calculated indicator of brittle and plastic deformations; certain ranges of changes each of parameters. Statistical processing of results of researches was executed by means of many-dimensional (factor, cluster and component) and correlation analyses, the models of multiple linear regression were used. The scientific significance of the dissertation consists in establishment regularity change of geomechanical parameters depending on the terms forming gas content of coal-rock mass and justification selection perspective areas for extraction of methane. The practical significance of the results obtained consists in that: 1) «Methodical bases estimation perspective mines at Donbass on the volume of methane workability» is developed. 2) «Complex methodology of prediction of gas-dynamic zones» is developed. The developed methodical bases are a ground for the selection of the most perspective coal mines (operating and closed) for extraction of methane and can be taken into account at development of projects in relation to the rational exception of methane coal deposits, that has a social and ecological value for the coal gas deposits at Donbass. Implementation of the results of research: «Methodical bases estimation perspective mines at Donbass on the volume of methane workability» are passed and used to «Nedra Luganshiny». By the geomechanical parameters of coal mines (operating and closed) of «Artemugol», «Krasnodonugol», «Dobropillyaugol», «Toretskugol» of substantiated selection of most perspective for the methane extraction (an act of introduction is from 25.11.2014). «Complex methodology of prediction of gas-dynamic zones» is passed on a mine «Severnaya» to «Toretskugol», the expected economic effect from the use of the worked out methodology made a 145,8 thousand of UAH, achieved due to using of primary material for calculations, that considerably cuts prime cost works, perspective mines and areas sent to prediction and allows to define the points of laying gas well for degassing during preparation of areas to the industrial methane extraction (an act of introduction is from 17.11.2016).