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Information × Registration Number 0200U003807, 0100U004890 , R & D reports Title Scientific-technical substantiation of basic parameters of pillar working out technology in the mine "Yubileynaya" SHK "Pavlogradygol" popup.stage_title Head Koshka O.G., Registration Date 08-11-2000 Organization National Mining University of Ukraine popup.description2 Mechanism of stress and displacement distribution of the system "roof-pillars-floor(using method of boundary elements and model of linear-hereditary medium) taking unto account spread in initial data in regard to physical and mechanical characteristics and geometrical parameters of room system of mining thin flat-dipping coal beds within weak rocks was found. Correlative relations for maximum value of roof and floor convergence and maximum value of normal and equivalent(according to P.P.Balandin criterion) stresses in the roof and pillars were obtained. Dependens of roof caving probability from the deep mining for hard coal and weak country rocks using A/P Rdzanitsyn safety according to was established. Product Description popup.authors popup.nrat_date 2020-04-03 Close