UNDERGROUND MINING
Original Paper
UDC 622.333:622-112.2© A.A. Dudin, M.V. Lysenko, E.V. Aushev, V.A. Karasev, S.N. Nogaev, R.Yu. Valeshnyj, D.I. Moroz, D.V. Shilnikov, 2023
ISSN 0041-5790 (Print) • ISSN 2412-8333 (Online) • Ugol’ – Russian Coal Journal, 2023, № 8, pp. 87-95
DOI: http://dx.doi.org/10.18796/0041-5790-2023-8-87-95
Title
EXPERIENCE OF IMPLEMENTING DIRECTIONAL HYDRAULIC FRACTURING TO MANAGE POORLY CAVING ROOFS AT VORKUTAUGOL COAL FIELDS
Authors
Dudin A.A.1, Lysenko M.V.1, Aushev E.V.1, Karasev V.A.1, Nogaev S.N.2, Valeshnyj R.Yu.2, Moroz D.I.2, Shilnikov D.V.2
1NITS-IPGP “RANK” LLC [Scientific Research Center – Institute of Design of Mining Enterprises “RANK”, Novosibirsk, 630090, Russian Federation
2Vorkutaugol JSC, Vorkuta, 169908, Russian Federation
Authors Information
Dudin A.A., Director
Lysenko M.V., Technical Director, e-limak2@yandex.ru" title="mailto:mail: limak2@yandex.ru">mail: limak2@yandex.ru
Aushev E.V., Deputy Technical Director
Karasev V.A., PhD (Engineering), Innovative Development Specialist
Nogaev S.N., Technical Director
Valeshnyj R.Yu., Deputy Chief Engineer for Technology
‘Komsomolskaya’ Mine Joint Venture
Moroz D.I., Chief Technologist for Gas Dynamic Phenomena
Shilnikov D.V., Chief Engineer of Zapolyarnaya Mine
Abstract
The paper reviews the relevance of the challenges concerned with managing poorly caving roofs at the Vorkuta coal deposit during the stoping operations as well as the possibility of resolving these challenges in operational conditions. Controlled caving of poorly caving roofs as well as research support of these activities have been implemented at the Vorkutaugol operations using the directional hydraulic fracturing method. Evaluation has been made of the efficiency of the implemented technical solutions. Based on the pilot implementation results of the directional hydraulic fracturing method (DFM) to manage poorly caving roofs, a high efficiency of this method has been confirmed, as well as the predictability of the result for the Vorkutaugol conditions.
Keywords
Coal deposit, Roof-caving increment, Poorly caving roof, Roof weakening, Directional hydraulic fracturing, Slot-cutting tool, Primordial fissure, Oriented crack, Video endoscopic inspection.
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For citation
Dudin A.A., Lysenko M.V., Aushev E.V., Karasev V.A., Nogaev S.N., Valeshnyj R.Yu., Moroz D.I. & Shilnikov D.V.
Experience of implementing directional hydraulic fracturing to manage poorly caving roofs at Vorkutaugol coal fields. Ugol’, 2023, (8), pp. 87-95. (In Russ.). DOI: 10.18796/0041-5790-2023-8-87-95.
Paper info
Received June 12, 2023
Reviewed July 14, 2023
Accepted July 26, 2023
