Development of a thick flat seam with coal extraction from the top coal layer using a robotic complex

DOI: https://doi.org/10.30686/1609-9192-2023-S2-26-31

Читать на русскоя языкеV.I. Klishin, B.A. Anferov, L.V. Kuznetsova
Federal Research Center for Coal and Coal Chemistry of the Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russian Federation
Russian Mining Industry №S2 / 2023 р. 26-31

Abstract:

Introduction. When developing coal deposits using underground method, the greatest success was achieved for the seams with the thickness of up to 7 m by means of complex mechanization in one layer. The productivity of a cleared face reaches 6–8 thousand tons per day. A method of coal extraction from the top coal layer is used to mine seams of greater thickness. The limiting factor is the inability to control of the extraction process and, as a result, significant operational losses.

Objective. The research aims to develop promising technologies for efficient and safe mining of thick flat coal seams using a robotic complex with controlled extraction from the top coal layer.

Methods. The research is based on the analogy method. Results. By closing the gates installed on the extended sides of the line conveyor sections during the operation of the coal cutterloader and opening them during the release of coal, penetration of the loosened coal into the “pockets” of the support sections is eliminated. This reduces the operational loss of coal, the likelihood of “floating” sections of the support, as well as risks of emergencies. Due to the presence of an additional bunker on the side of the mined-out space, the coal from the top layer is collected, temporarily withheld, and then gravity fed into the outlet opening. Elimination of the advance preparation of the top coal layer in the area above the planned break-down chamber prevents man-induced discontinuities inside the rock mass above the breakdown chamber, which increases its stability. Construction of the break-down chamber with an inclination against the working face provides a sequential introduction of the support sections into the break-down chamber, one at a time, which allows timely preparation and release of coal.

Keywords: thick coal seam, underground method, mining, complex mechanization, coal extraction from the top coal layer, face conveyor, robotization

Acknowledgments: The work was performed within the framework of the state assignment of the Federal Research Center of Coal and Coal Chemistry of the Siberian Branch of the Russian Academy of Sciences, : Project FWEZ-2021-0002 'Development of efficient technologies of coal mining by robotic mining complexes operating without permanent presence of personnel in mining zones, design of control systems and methods to assess their technical condition and operating life as well as justification of the mineral resource base reproduction' (Reg. No. ААААА21-121012290021-1).

For citation: Klishin V.I., Anferov B.A., Kuznetsova L.V. Development of a thick flat seam with coal extraction from the top coal layer using a robotic complex. Russian Mining Industry. 2023;(S2):26–31. https://doi.org/10.30686/1609-9192-2023-S2-26-31

Article info

Received: 23.07.2023

Revised: 31.08.2023

Accepted: 02.09.2023

Information about the authors

Vladimir I. Klishin – Dr. Sci. (Eng.), Corresponding Member of the Russian Academy of Sciences, Professor, Director of the Institute of Coal, Federal Research Center of Coal and Coal Chemistry of Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Boris A. Anferov – Cand. Sci. (Eng.), Leading Researcher, Federal Research Center for Coal and Coal Chemistry of the Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russian Federation; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Lyudmila V. Kuznetsova – Cand. Sci. (Eng.), Leading Researcher, Federal Research Center for Coal and Coal Chemistry of the Siberian Branch of the Russian Academy of Sciences, Kemerovo, Russian Federation

Conflict of interest

The authors declare no conflict of interests. All the authors have read and approved the final version of this paper.

References

1. Petrenko I.E. Russia’s coal industry performance for January – December, 2022. Ugol’. 2023;(3):21–23. (In Russ.) https://doi.org/10.18796/0041-5790-2023-3-21-33

2. Demura V.N., Artemiev V.B., Yasyuchenya S.V., Kopylov K.N., Yutyaev E.P., Meshkov A.A., Lupii M.G., Feofanov G.L. Technological schemes for the preparation and development of excavation areas at the mines of OAO SUEK-Kuzbass: an album. 2nd ed. Moscow: Gornoe delo; Kimmeriyskiy tsentr; 2014. 256 p. (In Russ.)

3. Kalinin S.I., Novoseltsev S.A., Galimardanov R.Kh. et al. Development of a thick coal seam by a mechanized complex with the release of a under-roofing pack. Kemerovo: Kuzbass State Technical University; 2011. 224 p. (In Russ.)

4. Jangara H., Atilla Ozturk C. Longwall top coal caving design for thick coal seam in very poor strength surrounding strata. International Journal of Coal Science & Technology. 2021;8(4):641–658. https://doi.org/10.1007/s40789-020-00397-y

5. Wang Z., Tang Y., Gong H. Longwall top-coal caving mechanism and cavability optimization with hydraulic fracturing in thick coal seam: A case study. Energies. 2021;14(16):4832. https://doi.org/10.3390/en14164832

6. Melnik V.V., Suschev R.A. The technology of the thick coal layer extraction with the discharge of underroof mass. Mining Informational and Analytical Bulletin. 2009;(5):198–210. (In Russ.)

7. Liang M., Hu C., Yu R., Wang L., Zhao B., Xu Z. Optimization of the process parameters of fully mechanized top-coal caving in thick-seam coal using bp neural networks. Sustainability. 2022;14(2):1340. https://doi.org/10.3390/su14031340

8. Klishin V.I., Anferov B.A., Kuznetsova L.V., Nikitenko S.M. A method for developing a thick flat seam with the release of coal from the under-roofing layer and a grate line of a scraper conveyor for its implementation. Patent RF No.2800180. Publication date 2023, bull. No.20. (Russ.)

9. Klishin V. I., Anferov B.A., Kuznetsova L.V., Borisov I.L. Section of mechanized support of a working face with a device for forced release of coal. Patent RF No.182240. Publication date 2018, bull. No.22. (Russ.)

10. Klishin V.I., Anferov B.A., Kuznetsova L.V., Klishin S.V. A method for developing a thick flat seam with the release of coal from the under-roofing layer. Patent RF No.2760270. Publication date 2021, bull. No.33. (Russ.)

11. Nikitenko M.S., Kizilov S.A., Zakharov Yu.N., Khudonogov D.Yu., Ignatova A.Yu. Measurement of feeder performance during coal discharge from an underroof seam using machine vision. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2022;7(4):264–273. https://doi.org/10.17073/2500-0632-2022-09-22

12. Nikitenko S., Kiessling U., Kizilov S., Nikitenko M. Longwall top coal caving automation concept. E3S Web of Conferences. 2021;330:02001. https://doi.org/10.1051/e3sconf/202133002001