STRUCTURAL ASPECTS OF HYBRID OPEN PIT/UNDERGROUND METHOD OF COAL MINING

The article describes the basic aspects of hybrid open pit/underground mining method. Integration of the progressive open pit and underground methods of coal mining within a general infrastructure at open pit coal mines currently under construction or operation will extend useful life of deposits and produce considerable resource-saving effect owing to the more complete coal extraction. The review of the hybrid geotechnologies shows that Kuzbass mines either carry out simultaneous open pit and underground mining (parallel operation), or apply first open pit and then underground method (sequential operation), or develop marginal areas of open pit mines using the highwall mining system. Developed at the Institute of Coal, the concept of open pit and underground mining integration governs the current trend of hybrid open pit/underground mining of coal in Kuzbass. It is found that process flowsheets accepted in open pit mining optimally match up modular mine-technical structures of underground mines.

Estimation of coal production output in Kuzbass in 2008 to 2016 with respect to the mining method (open, underground, hybrid) shows that coal production using the hybrid open pit/underground method has doubled, production in modular sites has grown three times, while open pit mining output within the hybrid geotechnology has increased 1.5 times.

Keywords

Open pit mining, underground mining, aspects, coal basin, modular mine section, technical structures, coal production.

Issue number: 2
Year: 2018
ISBN:
UDK: 622.27
DOI: 10.25018/0236-1493-2018-2-0-50-56
Authors: Fedorin V. A., Shakhmatov V. Ya., Varfolomeev E. L., Mikhaylov A. Yu.

About authors: Fedorin V.A., Doctor of Technical Sciences, Head of Laboratory, e-mail: fva@icc.kemsc.ru, Shakhmatov V.Ya., Candidate of Technical Sciences, Leading Researcher, e-mail: ShakhmatovVY@is.sbras.ru, Varfolomeev E.L., Researcher, e-mail: kku@icc.kemsc.ru, Mikhaylov A.Yu., Leading Technologist, e-mail: lexus@icc.kemsc.ru, Federal Research Center of Coal and Coal Chemistry, Siberian Branch of Russian Academy of Sciences, 650065, Kemerovo, Russia.

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