Журналы →  Eurasian mining →  2020 →  №1 →  Назад

EQUIPMENT AND MATERIALS
Название Theoretical framework for the efficiency evaluation of coal mining machines
DOI 10.17580/em.2020.01.12
Автор Linnik Yu. N., Linnik V. Yu., Zhabin A. B., Polyakov A. V.
Информация об авторе

State University of Management, Moscow, Russia:

Linnik Yu. N., Professor, Doctor of Engineering Sciences
Linnik V. Yu., Associate Professor, Doctor of Economic Sciences, vy_linnik@guu.ru

 

Tula State University, Tula, Russia:
Zhabin A. B., Professor, Doctor of Engineering Sciences
Polyakov A. V., Professor, Doctor of Engineering Sciences, Academic Counselor of the Academy of Mining Sciences

Реферат

Efficiency of coal mining machines in terms of their productivity and reliability depends on the conformity of cutter head designs with operating conditions and with a system of economical, technological and engineering constraints conditioned by load spectrum which influences the limiting moment of transmissions, allowable torsion torque of transmission with regard to gearing durability, etc. The system of constraints consists of economical constraints—pick replacement conditions, maximal pick productivity, allowable coal grade; technological constraints—roof support capacity, coal haulage capacity, gas criterion, continuous power of motor; as well as engineering constraints—maximal rate of feed of shearer, pulling power of feed assembly, maximal (stable) moment, radial overhang of picks. The constraints connected with the machine feed rate, pulling power and the maximal torsion torque (stable power) depend on breaking characteristics of coal seam. The aggregate evaluation of coal breaking characteristics is proposed to perform using the equivalent cuttability index of coal. The newly proposed index, as against the previously used cuttability index, tells more on the dynamics of cutting complex-structure coal seams with hard inclusions. The relations to determine theoretical productivity of coal mining machines, maximal torsion torque of motors, load variation factor of cutter heads with regard to their high-frequency and low-frequency components are presented. The authors exemplify determination of possible productivity and efficient application domain for shearers in case of technological and engineering constraints.

Ключевые слова Theoretical capacity, loading, coal breaking characteristics, cutter head, variation factor, operating conditions of shearer
Библиографический список

1. Gubenko A. A., Klementeva I. N. Impact of technological, kinematic and force parameters on technical performance miner. Nauchnyi vestnik Moskovskogo gosudarstvennogo gornogo universiteta. 2011. No. 2. pp. 23–27.
2. Elenkin V. F., Klementeva I. N. Peculiarities of the Cutter-loader Screw Interaction with a Coal Bed within a Friction Contact Zones. Ugol. 2012. No. 9. pp. 40–42.
3. Khoreshok A. A., Tsekhin A. M., Borisov A. Yu. Influencing of Operation Conditions of Mining Machines on the Design of their Effectors. Gornoe oborudovanie i elektromekhanika. 2012. No. 6. pp. 2–5.
4. Linnik Yu. N., Zhabin A. B., Linnik V. Yu., Polyakov A. V. Notes about how cutters and cutterholders malfunctions affect to indicators of coal-plow machines work efficiency. Izvestiya Tulskogo gosudarstvennogo universiteta. Nauki o Zemle. 2018. No. 2. pp. 247–263.
5. Verbitskaya G. L. Improvement of the method of optimization of innovative risks at mining enterprises under uncertainty. Nauchnyi vestnik natsionalnogo gornogo universiteta. 2017. No. 3. pp 114–121.
6. Demin V. F., Nemova N. A., Demina T. V., Zeytinova Sh. B. Controlover geomechanical processes intended to impruve a coal-and-rock massif stability. Nauchnyi vestnik natsionalnogo gornogo universiteta. 2016. No. 2. pp. 5–10.
7. Nechitaylo Yu. A., Bazhinova T. A., Veselaya M. A. The energy estimation of transportation vehic. Nauchnyi vestnik natsionalnogo gornogo universiteta. 2016. No. 6. pp. 84–88.
8. Linnik Yu. N., Sherstkin V. V., Linnik V. Yu. Integral criterion of coal seam breakability. Gornyi Zhurnal. 2015. No. 8. pp. 37–41. DOI: 10.17580/gzh.2015.08.09
9. Linnik Yu. N., Linnik V. Yu. Information System for Underground Coal Mining Output Prediction. Upravlenie. 2014. Vol. 2, No. 3. pp. 23–27.
10. Gibadullin A. A., Gilts N. E., Romanova Ju. A., Romanova Ir. N., Bahretdinova Kh. A. The development strategy of the environmental safety of the electric power complex. IOP Conference Series: Materials Science and Engineering. 2019. Vol. 537, No. 4. 042065. DOI: 10.1088/1757–899X/537/4/042065
11. Morkovkin D. E., Gibadullin A. A., Romanova Ju. A., Erygin Yu. V., Ziadullaev Ul. S. Formation of a national environmental strategy for the fuel and energy complex. IOP Conference Series: Materials Science and Engineering. 2019. Vol. 537, No. 4. 042064. DOI: 10.1088/1757–899X/537/4/042064
12. Pozin E. Z., Melamed V. Z., Ton V. V. Coal cutting by shearers. Moscow : Nedra, 1984. 286 p.
13. Pozin E. Z., Melamed V. Z., Azovtseva S. M. Design and efficiency evaluation of cutter heads of shearers. Improvement of reliability and design of mining machines : Collected papers. Moscow : Institut gornogo dela im. A. A. Skochinskogo, 1986. pp. 29–34.
14. Yuanping Cheng, Liang Wang, Hongyong Liu, Shengli Kong, Quanlin Yang et al. Definition, theory, methods, and applications of the safe and efficient simultaneous extraction of coal and gas. International Journal of Coal Science & Technology. 2015. Vol. 2, Iss. 1. pp. 52–65.
15. Jinhua Wang, Bin Yu, Hongpu Kang, Guofa Wang, Debing Mao et al. Key technologies and equipment for a fully mechanized top-coal caving operation with a large mining height at ultrathick coal seams. International Journal of Coal Science & Technology. 2015. Vol. 2, Iss. 2. pp. 97–161.
16. Pozin E. Z., Sovetov V. L. Optimization of operating conditions of cutter heads. Reliability and design optimization of mining machines : Collected papers. Moscow : Institut gornogo dela im. A. A. Skochinskogo, 1987. pp. 26–34
17. Naeimipour A., Rostami J., Buyuksagis I. S., Frough O. Estimation of rock strength using scratch test by a miniature disc cutter on rock cores or inside boreholes. International Journal of Rock Mechanics and Mining Sciences. 2018. Vol. 107. pp. 9–18.
18. Guofa Wang, Yihui Pang. Surrounding rock control theory and longwall mining technology innovation. International Journal of Coal Science & Technology. 2017. Vol. 4, Iss. 4. pp. 301–309.

Полный текст статьи Theoretical framework for the efficiency evaluation of coal mining machines
Назад