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Information × Registration Number 0225U002266, (0122U000846) , R & D reports Title The development of scientific bases of methods analysis of wave processes in the mine medium popup.stage_title Встановлення закономірностей і визначення параметрів хвильових процесів при видобутку мінеральної сировини. Head Bliuss Borys О., Доктор технічних наук Registration Date 27-02-2025 Organization Institute of Geotechnical Mechanics named after MS Polyakova of the National Academy of Sciences of Ukraine popup.description1 Еstablishment of regularities that characterize wave and physical-and-mechanical processes in mine and heterogeneous medium taking into account the rocks properties and different physical nature of wave phenomena using the resource-saving technologies for mining with ecological safety requirements popup.description2 Based on the results of the studies, it was found that the smooth change in methane passing through the face is described by a quadratic equation, which indicates gradual changes without sharp fluctuations, and the release of methane into the working space is described by a cubic equation, which indicates an uneven process of methane release with minor changes at the distance at the entrance to the face and significant changes at the exit from the face. The obtained coefficients of the equations reflect the nature of methane changes: cubic and quadratic components regulate the influence of longwall coordinates on the methane volume, linear components determine the main trend, and constants set the basic level of methane volume. It has been proved that the frequency characteristics of the electrical parameters of a compressed coal powder tablet and a plane-parallel fragment of undisturbed coal of comparable area and thickness differ due to additional effects of Maxwell-Wagner polarisation arising at the boundaries of differently oriented powder grains. By the method of simulation modelling, the regularities of changes in the state of the massif when it is saturated with polymers near the underground workings, which are determined by the geological structure (thickness and sequence of rock layers) and the scheme of polymer strengthening of the massif section, have been established, which allows analysing the informative parameters of the stress-strain state of the rock massif, predicting the state of the geo-environment and its changes under the influence of polymer saturation. The regularity of the decrease in the numerical coefficient of proportionality between the velocity and the square of the particle size according to the inverse power function depending on the density is established. For the first time, the law of the ratio of the free-fall velocity to the compressed velocity is also proved to increase according to a power law with increasing density. Product Description popup.authors Ahaiev Ruslan A. Bezruchko Kostiantyn A. Bliuss Borys O. Zberovskyi Vasyl V. Kliuiev Eduard S. Kurnosov Serhii A. Medvedieva Olha O. Pymonenko Liudmyla I. Cholyshkina Valentyna V. Shevchenko Heorhii O. popup.nrat_date 2025-02-27 Close