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PROCESSING AND COMPLEX USAGE OF MINERAL RAW MATERIALS
ArticleName Increasing the yield of coarse coal fractions in shearing
DOI 10.17580/gzh.2021.02.13
ArticleAuthor Nguyen V. S., Nguyen K. L., Lykov Yu. V.
ArticleAuthorData

Saint-Petersburg Mining University, Saint-Petersburg, Russia:

V. S. Nguyen, Post-Graduate Student
K. L. Nguyen, Post-Graduate Student
Yu. V. Lykov, Associate Professor, Candidate of Engineering Sciences, yuri_lykov@mail.ru

Abstract

Coal is one of the most valued minerals which are important to advance the power engineering, metallurgy, chemistry and other industries in Vietnam. The complex structure of coal seams increases mining expenses and decreases extractability of coal. For this reason, it is of the current concern in Vietnam to improve and intensify low-technology coal production at the preset face output, specific energy consumption, grain size composition and rate of coal extraction. An emphasis is currently laid on an increase in coal production. By 2030 it is planned to double the coal output versus the present-day level. In the country, coal is predominantly cut by drum shearers, which, aside from considerable power input, requires much material and labor to suppress explosive coal dust. Enhancement of productivity, improvement of gain size composition, as well as reduction in energy input and dust generation are possible in case of application of integrated measures including design improvement of cutters and loaders, cutter patterns, etc. The authors have implemented appropriate studies and developed an approach to shear design and operation optimization.

keywords Coal, underground mining, shearer, shearer drum, cutters, shear shape, cutter pattern, grain size composition
References

1. Sidorenko A. A., Sirenko Yu. G., Sidorenko S. A. Influence of face advance rate on geomechanical and gas-dynamic processes in longwalls in gassy mines. Eurasian Mining. 2018. No. 1. pp. 3–8. DOI: 10.17580/em.2018.01.01
2. Gabov V. V., Nguyen Khac Linh. Use of shearers in Vietnam mines : Current situation and prospects. Innovations and Growth Prospects in Mining Machine Engineering and Electrical Engineering : International Conference Proceedings. Saint-Petersburg : Sankt-Peterburgskiy gornyi universitet, 2017. Vol. 1. pp. 79–82.
3. Zubov V. P. Status and directions of improvement of development systems of coal seams on perspective Kuzbass coal mines. Journal of Mining Institute. 2017. Vol. 225. pp. 292–297.
4. Tolstunov S. A., Mozer S. P. The choice of effective executive body of the mountain harvester for the destruction of permafrost rocks big cleavage. GIAB. 2015. No. 1. pp. 81–87.
5. Zakharov Yu. N., Shcherba T. P. The improving of the efficiency of the process of mining extraction of silvinite by method of spalling of interpicks pillars. GIAB. 2014. No. 3. pp. 81–84.
6. Gabov V. V., Zadkov D. A. Mathematical model of simple spalling formation during coal cutting with extracting machine. Journal of Physics: Conference Series. 2018. Vol. 1015, Iss. 5. 052007. DOI: 10.1088/1742-6596/1015/5/052007
7. Khac Linh Nguyen, Gabov V. V., Zadkov D. A. Improving efficiency of cleanup and coal flow formation on conveyor by shearer loader with accessorial blade. Eurasian Mining. 2019. No. 1. pp. 37–39. DOI: 10.17580/em.2019.01.09
8. Nguyen Khac Linh, Gabov V. V., Doan Van Giap, Pham Van Tien. Study of the influence of structure and parameters of loading and transporting devices of a cleaning combine on the efficiency of coal loading. Journal of Physics: Conference Series. 2019. Vol. 1384. 012036. DOI: 10.1088/1742-6596/1384/1/012036
9. Rz hevskiy V. V. Problems of mining industry an d complex of mining sciences. Moscow : Stroyizdat, 1991. 241 p.
10. Trifanov M. G., Shishlyannikov D. I., Ivanov S. L. In-situ estimation of drive loads in Ural heading-andwinning machines. GIAB. 2018. No. 1. pp. 166–174.
11. Kim E., Hirro K., Oliveira D., Kim A. Effects of the skew angle of conical bits on bit temperature, bit wear, and rock cutting performance. International Journal of Rock Mechanics and Mining Sciences. 2017. Vol. 100. pp. 263–268.
12. Osman Zeki Hekimoglu. A pick force calculation method suggested for tool lacing of mechanical excavators employing drag tools. International Journal of Mining, Reclamation and Environment. 2018. Vol. 32, No. 8. pp. 564–585.
13. Lin Fu, Changlong Du, Jianping Li, Kehong Zheng. Influence of pick working angle on cutting performance of auger mine r’s aiguille. Advances in Mechanical Engineering. 2015. Vol. 7, Iss. 5. DOI: 10.1177/1687814015585427
14. Osman Zeki Hekimoglu. Suggested methods for optimum rotative motion of point attack type drag tools in terms of skew angles. International Journal of Mining, Reclamation and Environment. 2020. Vol. 34, No. 8. pp. 573–591.
15. Zhang Qianqian, Han Zhennan, Zhang Mengqi, Zhang Jianguang. Prediction of tool forces in rock cutting using discrete element method. The Electronic Journal of Geotechnical Engineering. 2015. Vol. 20. pp. 1607–1625.
16. Pozin E. Z., Melamed V. Z., Ton V. V. Coal cutting by shearers. Moscow : Nedra, 1984. 286 p.
17. Gabov V. V., Nguyen V. S., Zadkov D. A., Klyushnik I. D., Do D. Ch. Scheme for the installation of cutters on screw executive bodies with cutting, coupling and group cuts. GIAB. 2020. No. 1. Special issue 4. Patterns of picks on shearing drums with undercutting, paired and grouped tools. pp. 3–14.
18. Bolmant L. V., Gisich A. D., Grigorkin V. N. et al. Working member of excavating machine. Patent SSSR, No. 1838605. Applied: 11.01.1991. Published: 30.08.1993. Bulletin No. 32.
19. Prushak V. Ya., Shcherba V. Ya., Petrovskiy B. I. et al. Working member of stoping cutter-loader. Patent RB, No. 11929, MPK Е 21S 27/00. Applied: 30.10.2006. Published: 30.06.2008.
20. Gabov V. V., Nguyen V. S., Nguyen K. L., Lykov Yu. V. Auger-type working member. Patent RF, No. 190549. Applied: 22.04.2019. Published: 03.07.2019. Bulletin No. 19.

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