COAL PREPARATION

Original paper

UDC 622.271.45:622.765:66.091 E.M. Dorofeev¹, A.I. Bukovtsova², L.M.Kolishchak³, N.N. Bryukhanova⁴, Sh.A. Yusupov⁵, J.M. Begatov⁶, 2025

ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol' – Russian Coal Journal, 2025, № 6, pp. 23-27

DOI: http://dx.doi.org/10.18796/0041-5790-2025-6-23-27

Title

INTEGRATED USE OF MECHANO-CHEMICAL-ACTIVATED TAILINGS OF COAL PREPARATION FOR CREATION OF BACKFILL MIXTURES AND REGULATION OF METHANE EMISSION IN MINES

Authors

E.M. Dorofeev¹, A.I. Bukovtsova², L.M.Kolishchak³, N.N. Bryukhanova⁴, Sh.A. Yusupov⁵, J.M. Begatov⁶

• ¹ Admiral F.F. Ushakov State Maritime University, Novorossiysk, 353924, Russian Federation
• ² A.A. Ugarov Stary Oskol Technological Institute, Branch of the National University of Science and Technology MISIS (NUST MISIS), Stary Oskol, 309516, Russian Federation
• ³ Moscow Polytechnic University, Moscow, 107023, Russian Federation
• ⁴ A.P. Vinogradov Institute of Geochemistry of the Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russian Federation
• ⁵ "Tashkent Institute of Irrigation and Agricultural Mechanization Engineers" National Research University, Tashkent, 100000, Uzbekistan
• ⁶ Joint Belarusian-Uzbek Intersectoral Institute of Applied Technical Qualifications, Tashkent, 100071, Uzbekistan е-mail: 79180401222@yandex.ru

Authors Information

• Dorofeev E.M. – PhD (Pedagogical), Admiral F.F. Ushakov State Maritime University, Novorossiysk, 353924, Russian Federation, e-mail: 79180401222@yandex.ru
• Bukovtsova A.I. – PhD (Engineering), A. A. Ugarov Stary Oskol Technological Institute, Branch of the National University of Science and Technology MISIS (NUST MISIS), Stary Oskol, 309516, Russian Federation, e-mail: 9507131581@mail.ru
• Kolishchak L.M. – Senior lecturer, Moscow Polytechnic University, Moscow, 107023, Russian Federation, e-mail: lara.kolishchak@mail.ru
• Bryukhanova N N. – Researcher, Innovation and Technology Centre for Energy and Resource Saving, A.P. Vinogradov Institute of Geochemistry of the Siberian Branch of the Russian Academy of Sciences, Irkutsk, 664033, Russian Federation, e-mail: nnb@igc.irk.ru
• Yusupov Sh.A. – Assistant, "Tashkent Institute of Irrigation and Agricultural Mechanization Engineers" National Research University, Tashkent, 100000, Uzbekistan, e-mail: sher_xxx89@mail.ru
• Begatov J.M. – PhD, Associate Professor, Joint Belarusian-Uzbek Intersectoral Institute of Applied Technical Qualifications, Tashkent, 100071, Uzbekistan, e-mail: j.begatov@mail.ru

Abstract

The presented work investigates the possibility of integrated use of mechanochemical-activated tailings of coal preparation for the creation of backfill mixtures to regulate ventilation flows and methane emissions in mines. It is shown that mechanochemical activation of coal combustion waste leads to a significant increase in the recovery of metals, in particular lead. It is determined that the use of mechanochemically activated fly ash in laying mixtures allows to improve their physical and mechanical characteristics, namely, compressive strength. It is suggested to use the developed backfill mixtures for erection of arrays in the mined-out space of mines. It is established that the use of these arrays allows to reduce methane concentration and optimise ventilation flows. On the basis of the analysis of the dynamics of methane concentration change the optimal step of concrete arrays erection was determined.

Keywords

Coal, mechanochemical activation, coal preparation waste, backfill mixtures, methane extraction, coal mine, fly ash, metal recovery, mining safety.

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For citation

Dorofeev E.M., Bukovtsova A.I., Kolishchak L.M., Bryukhanova N.N., Yusupov Sh.A., Begatov J.M. Integrated use of mechano-chemical-activated tailings of coal preparation for creation of backfill mixtures and regulation of methane emission in mines. Ugol'. 2025;(6):23-27. (In Russ.). DOI: 10.18796/0041-5790-2025-6-23-27.

Paper Info

• Received April 15, 2025
• Reviewed May16, 2025
• Accepted May 26, 2025