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Information × Registration Number 0223U002276, 0120U101099 , R & D reports Title Development of advanced technologies of full extraction of energy coal with accumulation of empty rocks in the underground space. popup.stage_title Head Malashkevych Dmytro S., Кандидат технічних наук Registration Date 14-02-2023 Organization National Technical University Dnipro Polytechnic popup.description2 New conceptual approaches to new spatial and planning solutions for mining operations to develop a technology for waste-free coal mining are substantiated, taking into account the mandatory integral elements: selective coal extraction in longwall and development faces, full reuse of working faces, optimization of parameters for the timely preparation of coal reserves, design of a special transport and storage workings in the excavation area, creation of new elements of mechanization of transport and storage technological processes. A new advanced technology for the extraction of high-quality thermal coal with the accumulation of mine rocks in the mined-out space has been developed, which consists in combining the processes of sinking operations to prepare the reserves of new excavation pillars with adjacent cleaning operations in paired longwalls through an innovative rock transport and rock and backfill chain. The mechanism of efficient logistical functioning of rock transport systems for the accumulation of waste rock in the underground space while maintaining the level of mining intensification is revealed. The annual total expected ecological and economic effect per one working face will amount to UAH 266.0 million, and the mine-wide effect will be about UAH 1.0 billion. Product Description popup.authors popup.nrat_date 2023-02-14 Close