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Information × Registration Number 0212U001482, 0109U002814 , R & D reports Title Theoretical bases of prognosis of the tense state of difficult structural of a rock mass environment of a working making by the analisis of artifical acoustic vibrations. popup.stage_title Head Shashenko A.N., Registration Date 07-02-2012 Organization State Higher Educational Institution National Mining University popup.description2 The mathematical model of distribution of vibrations in a coal layer taking into account heterogeneity of acoustic properties, conditioned the heterogeneous tense state of bottomhole area of array is developed. The analysis of the got analytical decision allowed to set the presence of areas in which amplitude of vibrations exceeds amplitude of the external loading considerably. It is set that the areas of enhanceable amplitudes of vibrations take place, both at a kinematics and a power loading. Frequencies, at which the increase of amplitudes, and degree of such increase, takes place depending on length and relative acoustic inflexibility of area of heterogeneity, are certain. The change of length and relative acoustic inflexibility of area of heterogeneity causes the change of amplitude-frequency vibrations which spread in a layer is rotined. The analysis of information which is got in mine terms for great while of supervisions and on results laboratory researches with the use of the developed methods of treatment of signals is conducted. The row of areas in an array, which can be interpreted, as going, is recognized near geological violation, from point of measure of heterogeneity of coal array into the passed violations are recognized. Areas can be distributed between itself on stably heterogeneous, and which are characterized the presence of wide range of heterogeneity. Product Description popup.authors Головко Юрій Миколайович Кондратюк Іван Валентинович Масленніков Євген Володимирович Мачула Марія Сергіївна Сдвижкова Олена Олександрівна Шашенко Олександр Миколайович Шломіна Людмила Семенівна popup.nrat_date 2020-04-02 Close