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Information × Registration Number 0220U102341, 0117U003056 , R & D reports Title Dynamic regimes of technological systems popup.stage_title Head Bliuss Borys O., Registration Date 12-03-2020 Organization Institute of Geotechnical Mechanics named by N. Poljakov of National Academy of Sciences of Ukraine popup.description2 The normative empirical methods for the prediction of methane release into preparatory workings and lavas, consisting of many disparate problems, were improved by combining them with a common solution. An advanced generalized method for predicting methane release into preparatory workings was developed on the basis of the physical meaning of deciphering of the empirical constants of a partial empirical regularity of a non-stationary coal-bed gas depletion, substantiation of the gas zonation of the gas drainage belt, and establishing the zonal regularities of the methane release in time and space. It was defined, that the coal seams of the study area are characterized by a high ash content, which influences the formation of their properties, including electromagnetic ones, since the stable electric potential is fixed only in the samples of coal with a high content of mineral impurities - the ash content of coal mines is increased by 30%. It was shown that, taking into account the chemical composition, the ashes of a numerous coal seams are siliceous-ferrous, unlike most of the others, which composition is purely siliceous. Such substantiated fact makes it appropriate for further development of the study of the ferrous constituent influence of mineral impurities on the electromagnetic properties of the coal substance. It was established that the water absorption of tuff when moistened is about 10% by weight of raw material, for the first day of moistening the strength of tuff is reduced to 9% from the initial one. The mathematical models and calculation algorithm of humidity, forces of indenter strangulation in material and compressive strength on time of moistening were developed. Product Description popup.authors Bezruchko Kostyantyn A Vasiliev Leonid M Kurnosov Sergiy A Lapshyn Yevgen S Nadutyj Volodymyr P Sofіysky Kostyantin K popup.nrat_date 2020-04-01 Close