DEVELOPMENT OF TECHNOLOGY FOR SUPPORTING MINE WORKINGS UNDER CONDITIONS OF INTENSE OXIDATION OF SULFIDE ORES AT THE ORLOVSKY MINE

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Abstract


Goal. Metal frame supports SVP-22 with round timber lagging and backfilling of the voidsof unsupported space with chock support is used in the workings of unstable ores and rocks at the Orlovsky mine. When filling the voids with a chock supportmanually, people are located in an unsupported part of the working, therefore this operation is hazardous and laborious. The purpose of the work is to select and test the backfill material for voids of unsupported space, which ensures a decrease in diffusion and oxygen seepage to the centers of spontaneous ignition of the ore bodies under conditions of intense oxidation of sulphide ores at the Orlovsky deposit. Methods. Foaming non-combustible materials (“Blockfil” phenolic two-component resins) were tested in the experimental works at the Orlovsky mine for backfilling the voids when supporting the mine workings by metal frame supports with a round timber lagging. Results. It has been established that the use of phenolic resins as backfilling will reduce the intensity of the oxidation reaction and prevent self-heating of the ore to critical temperatures, and also prevent or slow down the process of heating ofmine air from the heated surface of the ore body to temperatures exceeding the design values. Conclusions. The use of phenolic resin “Blockfil” to fill the voids ensured the absence of deformation of the elements of the metal frame support and the safety of mining, and also allowed to reduce the intensity of the oxidation reaction and prevent self-heating from the ore to critical temperatures and prevent or slow down the process of heating the mine air from the heated surface of the ore body to temperatures, exceeding the design values.


About the authors

Yuriy N Shaposhnik

N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences

Author for correspondence.
Email: shaposhnikyury@mail.ru
54, Krasny Prospect, Novosibirsk, 630091, Russian Federation

Doctor of Technical Sciences, leading research associate, laboratory of engineering physics geotechnologies, N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences. Research interests: geomechanics, mechanical properties and destruction of geomaterials and mountain massifs, problems of geotechnology and mineral processing

Anton I Konurin

N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences

Email: akonurin@yandex.ru
54, Krasny Prospect, Novosibirsk, 630091, Russian Federation

Candidate of Technical Sciences, research associate, laboratory of engineering physics geotechnologies, N.A. Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences. Research interests: mechanical properties and failure of geomaterials and rock bodies, modern geodynamics, modeling of geodynamic processes

Denis A Shokarev

Expert PRO

Email: denshok82@mail.ru
47, Protozanov A.K. str., Ust-Kamenogorsk, 070004, Republic of Kazakhstan

CEO “Expert PRO”. Research interests: problems of geotechnology and mineral processing, modern geodynamics, modeling of geodynamic processes

Sergey N Shaposhnik

East Kazakhstan State Technical University (EKSTU)

Email: shaposhniksergey@mail.ru
69, Protozanov A.K. str.,Ust-Kamenogorsk, 070004, Republic of Kazakhstan

Doctor of Technical Sciences, Professor at the Department of Geology and Mining, East Kazakhstan State Technical University (EKSTU). Research interests: seismology, seismic waves, problems of geotechnology and mineral processing

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Copyright (c) 2018 Shaposhnik Y.N., Konurin A.I., Shokarev D.A., Shaposhnik S.N.

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