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Information × Registration Number 0221U105528, 0117U005278 , R & D reports Title Reserch dangerous manifestation of mining pressure in support of mining operations in difficult mining- geological conditions popup.stage_title Head Kipko Oleksandr E., Registration Date 16-07-2021 Organization State Higher Educational Institution "Donetsk National Technical University" popup.description2  In order to study the stability of mine workings in difficult mining and geological conditions, under the action on the rocks of the developed coal seam, shock loads in the form of sudden collapses of stratified rock strata theoretically and experimentally studied the nature of changes in stress-strain state of side rocks in anisotropic coal mass. in which workings were carried out, field observations were made as the highwall mining moved along the displacement of rocks of section of preparatory workings at different methods of protection to assess safe working conditions of miners, established the dependence of roof rock displacements along the length of retractable lane at different methods of protection. , and also on the basis of previously specified researches have developed ways of protection of mine workings directed on increase of safety of work of miners in excavation sites of deep mines. Product Description popup.authors popup.nrat_date 2021-07-16 Close