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Information × Registration Number 0221U107264, 0117U004231 , R & D reports Title The development of scientific bases and improvement of methods and means of improving the efficiency and safety of mining operations in the extraction of uranium ore popup.stage_title Head Shevchenko Volodymyr H., Доктор технічних наук Registration Date 30-12-2021 Organization Institute of Geotechnical Mechanics named after MS Polyakova of the National Academy of Sciences of Ukraine popup.description2  The research object is the processes of mining operations at enterprises with targeted and associated uranium mining. The purpose of the study is to develop scientific bases and improve methods and means to increase the efficiency and safety of mining operations at enterprises with targeted and associated uranium ore mining. Research methods: mechanics of rock destruction; mathematical physics and mechanics of a continuous medium; nonlinear oscillations of mechanical systems; theories of elasticity and viscoelasticity; thermodynamics; woodworking, decryptography, electron and optical microscopy, X-ray diffraction analysis, chemical analysis. The nature of distribution and behavior of uranium minerals in rocks of different genesis is established; developed methods of functioning of elements of information system of safety of conducting underground mining works, formation of criteria of an estimation of danger of conducting underground mining works on a geomechanical factor; regularities of change of the SSS of the massif of rocks from intensity of their explosive loading at beating of ore deposit are established; the calculation of rational parameters of working bodies of SMF is substantiated and executed; the influence of the concentration of sulfuric acid, ammonium fluoride-bifluoride, urea nitrate, solution temperature on the destruction was determined; the methodology for determining the physical and mechanical properties of rocks has been improved; improved methods for calculating the parameters of vibration output reflected and classification by size and dehydration of crushed uranium ores and waste from their processing. The practical value of the work lies in the substantiation of the parameters of safe storage and transportation of radioactive waste, prevention of possible accidents and increase of safety of underground development of uranium ores without disturbance of the earth's surface. Product Description popup.authors Efremov Ernest I. Baranov Volodymyr A. Bulat Anatolii F. Dyrda Vitaliy Illationovich Skipochka Sergii I. Shevchenko Volodymyr H. popup.nrat_date 2022-03-09 Close