Adaptable and energy-efficient powered roof support unit

The article addresses an acute problem connected with mitigation of impact exerted by a ‘hovering’ roof on the immediate roof behavior and on the coal cutting sustainability in the fully mechanized longwall mining technology. Using the theory of overburden pressure and features of force interaction between powered roof support units and roof rocks, the duty of MKYU.2SH-13/27 powered roof support unit in Ruban Mine of SUEK-Kuzbass is analyzed. It is proposed to use an energy-based principle of ground control in a fully mechanized longwall, which means adjustment of volume of power fluid by-pass from head ends of hydraulic props of powered support units to the pressure line of the hydraulic system of the fully mechanized longwall mining system during subsidence of roof rocks. The parameters of the powered support unit with a pulse-free control of the roof rock subsidence resistance are substantiated. The proposed structure of an adaptable powered roof support unit with telescopic footing and canopy consists of a bearing stage and a face stage which are independently and concordantly telescopically expandable. The support and guide beams available in this unit structure ensure immobile force contact between the bearing components of the unit and roof rocks when the unit is advanced, as well as enhanced prop and decreased resistance to movement of the powered roof support unit when it is equipped with sliding bearing supports.

Keywords: coal, mining, longwall, overburden pressure, longwall mining system, powered roof support unit, hydraulic prop, adaptability, energy efficiency.
For citation:

Zadkov D. A., Gabov V. V., Babyr N. V., Stebnev A. V., Teremetskaya V. A. Adaptable and energy-efficient powered roof support unit. MIAB. Mining Inf. Anal. Bull. 2022; (6):46-61. [In Russ]. DOI: 10.25018/0236_1493_2022_6_0_46.


The study was supported under the state contract in the sphere of scientific activities in 2021, RN SRW-2020-0014.

Issue number: 6
Year: 2022
Page number: 46-61
ISBN: 0236-1493
UDK: 622.23.05
DOI: 10.25018/0236_1493_2022_6_0_46
Article receipt date: 21.12.2021
Date of review receipt: 05.02.2022
Date of the editorial board′s decision on the article′s publishing: 10.05.2022
About authors:

V.V. Gabov1, Dr. Sci. (Eng.), Professor, e-mail:, ORCID ID: 0000-0002-6587-2446,
D.A. Zadkov1, Cand. Sci. (Eng.), Assistant Professor, e-mail:, ORCID ID: 0000-0002-1709-431X,
N.V. Babyr1, Cand. Sci. (Eng.), Assistant of Chair, e-mail:, ORCID ID: 0000-0002-5512-8517,
A.V. Stebnev, Cand. Sci. (Eng.), Chief Mechanic, JSC SUEK-Kuzbass, 652507, Leninsk-Kuznetskiy, Russia,
V.A. Teremetskaya1, Graduate Student,
1 Saint-Petersburg Mining University, 199106, Saint-Petersburg, Russia.


For contacts:

D.A. Zadkov, e-mail:


1. Kazanin O. I., Sidorenko A. A., Drebenstadt C. I. Intensive underground mining technologies: Challenges and prospects for the coal mines in Russia. Acta Montanistica Slovaca. 2021, vol. 26, no. 1, pp. 60—69. DOI: 10.46544/AMS.v26i1.05.

2. Kazanin O. I., Sidorenko A. A. Meshkov A. A. Organizational and technological principles of realizing the potential of modern high-performance cleaning equipment. Ugol'. 2019, no. 12, pp. 4—12. [In Russ]. DOI: 10.18796/0041-5790-2019-12-4-13.

3. Meshkov A. A., Volkov M. A., OrdinA. A., Tymoshenko A. M.,Botvenko D. V. On record length and productivity of highwall mining the V.D. Yalevsky mine. Ugol'. 2018, no. 7, pp. 4—7. [In Russ]. DOI: 10.18796/0041-5790-2018-7-4-7.

4. Ralston J. C., Reid D. C., Dunn M. T., Hainsworth D. W. Longwall automation: Delivering enabling technology to achieve safer and more productive underground mining. International Journal of Mining Science and Technology. 2015, vol. 25, no. 6, pp. 865—876. DOI: 10.1016/j. ijmst.2015.09.001.

5. Brodny J. Analysis of the impact of unscheduled downtimes on their availability in machine operations. MAPE. 2018, vol. 1, no. 1, pp. 145-151. DOI: 10.2478/mape-2018-0019.

6. Buyalich G., Buyalich K., Byakov M. Factors determining the size of sealing clearance in hydraulic legs of powered supports. E3S Web Conference. 2017, vol. 21, article 03018. DOI: 10.1051/e3sconf/20172103018.

7. Szurgacz D., Brodny J. Analysis of the influence of dynamic load on the work parameters of a powered roof support’s hydraulic leg. Sustainability. 2019, vol. 11, no. 9. DOI: 10.3390/su11092570.

8. Buyalich G. D., Tarasov V. M., Tarasova N. I., Tarasov D. V. Increasing the safety of mining operations during the interaction of mechanized crosscut sections with lateral rocks in the face. Ugol'. 2016, no. 10, pp. 26—30. [In Russ]. DOI: 10.18796/0041-5790-2016-10-26-30.

9. Szurgacz D., Brodny J. Adapting the powered roof support to diverse mining and geological conditions. Energies. 2020, vol. 405, no. 13. DOI: 10.3390/en13020405.

10. Litvinenko V. S. Technological progress having impact on coal demand growth. XVIII International Coal Preparation Congress. Conference proceedings. 2016, vol. 1, pp. 3—16. DOI: 10.1007/978-3-319-40943-6_1.

11. 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. [In Russ]. DOI: 10.18454/PMI.2017.3.292.

12. Gendler S. G., Prokhorova E. A. Risk-based methodology for determining priority directions for improving occupational safety in the mining industry of the Arctic Zone. Resources. 2021, vol. 3, no. 10, pp. 1—14. DOI: 10.3390/resources10030020.

13. Buevich V. V., Gabov V. V., Zadkov D. A., Vasileva P. A. Adaptation of the mechanized roof support to changeable rock pressure. Eurasian Mining. 2015, no. 2, pp. 11—14. DOI: 10.17580/em.2015.02.03.

14. Gabov V. V., Zadkov D. A., Stebnev A. V. Evaluation of structure and variables within performance rating of hydraulically powered roof support legs with smooth roof control. Eurasian Mining. 2016, no. 2, pp. 37—40. DOI: 10.17580/em.2016.02.09.

15. Babyr N. V., Korolev A. I., Neupokoeva T. V. Enhancement of powered cleaning equipment with the view of mining and geological conditions. IOP Conference Series: Earth and Environmental Science. 2018, vol. 194, no. 3, article 032004. DOI10.1088/1755-1315/194/3/032004.

16. Klishin V. I., Kissling U., Reuther M., Wessel A. O. System of automatic control of roof supports as a means of adaptation of roof supports to different mining and geological conditions of Kuzbass mines. Bulletin of the Kuzbass State Technical University. 2014, no. 1, pp. 34—39. [In Russ].

17. Stebnev A. V., Buevich V. V. Improvement of performance indicators of hydraulic drive of props of powered support units of heading complexes. Journal of Mining Institute. 2017, vol. 227, pp. 576—581. [In Russ]. DOI: 10.25515/PMI.2017.5.576.

18. Guo W. B., Wang H. S., Dong G. W., Li L., Huang Y. G. A case study of effective support working resistance and roof support technology in thick seam fully-mechanized face mining with hard roof conditions. Sustainability. 2017, vol. 9, no. 935. DOI: 10.3390/su9060935.

19. Martens P. N., Rattmann L., Janssen S., Kratz T. Advances in longwall mining. 22nd World Mining Congress & Expo, Istambul. 2011, vol. 1, pp. 85—96.

20. Zorkov D., Renev A., Filimonov K., Zainulin R. The roof support load analysis for predriven recovery room parameters design. E3S Web of Conferences. 2020, vol. 174, article 01029.

21. Sobik L., Brodny J., Buyalich G., Strelnikov P. Analysis of methane hazard in longwall working equipped with a powered longwall complex. E3S Web of Conferences. 2020, vol. 174, article 01011.

22. Thang P. D., Thang H. H., Phuc L. Q. Technological solutions for intensive working of medium thick inclined coal seams in difficult conditions in the mines of the quangninh coal basin. Sustainable Development of Mountain Territories. 2019, vol. 11, no. 1, pp. 105—109.

23. Yutyaev E. P. Modern challenges and prospects for the development of technology of underground mining of shallow gas-bearing coal seams. Ugol'. 2017, no. 5, pp. 30—36. [In Russ]. DOI: 10.18796/0041-5790-2017-5-30-36.

24. Buyalich G. D., Buyalich K. G., Umrikhina V. Yu. Study of falling roof vibrations in a production face at roof support resistance in the form of concentrated force. IOP Conference Series: Materials Science and Engineering. 2016, vol. 142, article 012120. DOI: 10.1088/1757899X/142/1/012120.

25. Efimov V. I., Abramkin N. I., Vernigor V. V., Khakimov B. Kh. Underground mining equipment kits coal in shallow beds. Sustainable Development of Mountain Territories. 2020, vol. 12, no. 4(46), рp. 510—515.

26. Turuk Yu. V., Sysoev N. I., Lugantsev B. B., Streltsov S. V., Bogomazov A. A. Determining parameters of rotary skids for bases of powered support units. MIAB. Mining Inf. Anal. Bull. 2021, no. 9, pp. 113—121. [In Russ]. DOI: 10.25018/0236_1493_2021_9_0_113.

27. Klishin V. I., Fryanov V. N., Pavlova L. D., Nikitenko S. M., Malakhov Y. V. Rock massmultifunction mobile roof support interaction in mining. Journal of Mining Science. 2021, vol. 57, no. 3, pp. 361—369. DOI: 10.1134/s1062739121030017.

28. Gabov V. V., Zadkov D. A., Babyr N. V., Fangwei X. Nonimpact rock pressure regulation with energy recovery into the hydraulic system of the longwall powered support. Eurasian Mining. 2021, no. 2, pp. 55—59. DOI: 10.17580/em.2021.02.12.

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