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Information × Registration Number 0207U008284, 0107U005395 , R & D reports Title Investigation of parameters and development of recommendations for safe mining workings driving by blast-hole drilling at the mine of national enterprise "Site Management" popup.stage_title Head Lyashenko Vasyliy, Registration Date 05-12-2007 Organization Ukrainian Scientific Research and Disign Institute for Industrial Technology popup.description2 Object of the work is to define parameters of mine workings and drilling-and-blasting operations depending on the equipment applied and to develop recommendations for their safe operation in the mine of National Enter-prise "Site Management of the Enterprise being under Construction on the Basis of Novokostyantynivskeh Uranium Ore Deposit" (NE "Site Management"). Methods of the research is analytical review of driving the horizontal (incline up to 120) mine workings as well as their parameters and indices of drilling-and-blasting operations in the practices of the enterprises operating the uranium ore deposits mining in Ukraine and other countries of Commonwealth of Independent States (CIS). Results of the research contain analysis of geomechanical, mining-and-geological, hydrogeological and mining-and-technical conditions of driving the mine workings, parameters and indices of drilling-and-blasting operations when mine workings are driven, types of explosives and safe systems of exploding charge initiation, selection of self-propelled drilling and load-haul-dump equipment for driving the mine workings, section of the workings, box cuts and standard descriptor of drilling-and-blasting operations for driving the mine workings. It has been established that geomechanical conditions of Novokostyantynivskeh deposit are suitable for driving the mine workings by drilling-and-blasting in very rigid rock solids (rigidity factor under Protodyakonov scale f=14-20), with extremely considerable specific consumption of explosives for rock mass breaking (up to 4.0 kg/cub.m). Scientific novelty - initial parameters of drilling-and-blasting operations are specified from the geomechanical conditions and, on this basis, the variants of box cuts are developed with compensation volume in the cut that is sufficient for qualitative breaking of rock mass in the stope (when compensation volume factor is at least 1.34). Drilling-and-blasting technology has been developed for driving horizontal (incline up to 120) mine workings fordrift over the cycle up to 3.5 m that increases driving speed up to 350 m/month (currently, in the mines of State Enterprise "Eastern Mining and Concentration Combined Works" ("VostGOK"), driving speed for the workings mentioned is 60 to 70 m/month). Social importance - increase in mine workings driving speed up to 350 m/month using highperformance self-propelled drilling and load-haul-dump equipment makes it possible to shorten period of Novokostyantynivskeh deposit being put into operation that could give 2 000 to 3 000 jobs, in the first place, for the population of Kirovograd region. Results of the research effort will be used during development, designing and construction of the mine of NE "Site Management" with potential of increase in an annual ore mass output up to 2.5 million tonnes. Prognostic propositions for the research subject development: the results of the research and recommendations on the technology of driving the mine workings by drilling-and-blasting will enable improvement of mining methods on the way of diminishing the mined rock mass dilution and reduction of milling costs5635 Product Description popup.authors popup.nrat_date 2020-04-02 Close