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Information × Registration Number 0224U001138, 0122U002046 , R & D reports Title Substantiation of safe parameters of BPR on emissions-hazardous formations and sandstones, performance of research works in mining and geological conditions of PJSC «Management of mine «POKROVSKE», in 2022. popup.stage_title Head Minieiev Serhii Р., д.т.н. Registration Date 17-01-2024 Organization Institute of Geotechnical Mechanics named after MS Polyakova of the National Academy of Sciences of Ukraine popup.description2 The object of the study is to ensure the safety of mining operations in the conditions of PJSC «Management of the mine «POKROVSKE». The purpose of the work is to carry out a study of the stress-deformed state of rocks in the sole of the cleaning pit, to determine the regularities of the formation of zones relieved from rock pressure in the mining and geological conditions of PJSC «Management of the mine «POKROVSKE». Research methods – the methods of solid body mechanics, numerical modeling using the finite element method are used in the work. As a result of the work, the mining and geological conditions of mining operations in units 9-11 of PJSC «Management of the mine «POKROVSKE» and the rules for performing blasting operations on hazardous sandstones or near them were analyzed. The calculation of the amount of unloading of the rocks of the sole of the cleaning production from the mountain pressure was performed. The distributions of the values of geomechanical parameters and the zone of inelastic deformations at different moments of time after the next advance of the cleaning pit are constructed. Graphs of changes in time of rock unloading due to rock pressure were plotted. The method of performing mining and experimental works to determine the properties of sandstone and the degree of its release hazard has been developed. As a result of the application of the proposed scientific developments, it is possible to determine the amount of discharge of hazardous rocks and the time of their transition to a non-hazardous state, which will allow BPR to be performed without the introduction of a shock blasting regime.  Product Description popup.authors popup.nrat_date 2024-01-17 Close