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ArticleName Improvement of energy efficiency and safety in coal longwalls
DOI 10.17580/gzh.2019.04.19
ArticleAuthor Kopylov K. N., Kubrin S. S., Reshetnyak S. N.

SUEK, Moscow, Russia:

K. N. Kopylov, Technical Officer

Academician Melnikov Research Institute of Comprehensive Exploitation of Mineral Resources, Moscow, Russia:
S. S. Kubrin, Head of Laboratory, Professor, Doctor of Engineering Sciences


NUST MISIS, Moscow, Russia:
S. N. Reshetnyak, Associate Professor, Candidate of Engineering Sciences,


The coal mining industry in Russia is being faced with new challenges, which creates background for raising competitive capacity of coal by means of reduction in underground mining cost using advanced technologies and energy-efficient and safe equipment. For a gas and dust outburst-hazardous coal mine, a new structure is proposed for longwall management, which will considerably improve mining safety. The comparative analysis of the current and innovation management structures reveals potential for staff reduction in longwall owing to application of automatic management system and due to maintenance staff operation arranged in a safe zone (ventilation roadway). The innovation structure of coal longwall management ensures uniform control depending on methane emission rate. Signals from the methane and dust sensors in the face area enter the integrated information system of the longwall which automatically generates control signals for the longwall assembly. This eliminates human factor and improves mining safety. The article discusses topical aspects of an unmanned underground coal mining technology in terms of SUEK mines. It is emphasized that the automatic longwall management is only possible after updating of basic equipment drives and introduction of energy-effective modes of operation. In particular, it is necessary to modernize drives of cutting machines, oil stations, spraying stations, armored face conveyors and crushers. To this effect, operation of the machines should be changed from the unregulated to regulated mode. As a result, it will become feasible to extend the life of equipment through smooth starting (fewer jerks) and lower power consumption of energy-effective modes of operation, which, finally, will offer reduction in coal production cost.

keywords Coal mine, underground mining, energy-effective and safe technologies, unmanned mining, longwall management, innovation structure scheme, methane emission, dust formation

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