Operating Load of Belt Conveyor as a Reflection of Actual Planogram of Coal Shearer Operation in Integrated-Powered Face
Conveyor transport at a modern coal mine is the main link that determines the overall performance of the enterprise. For safe operation of belt conveyors, it is important to ensure that shift output per face doesn’t produce average and maximum minute material flows, which exceed strength margin of the belt, power margin of the drive, and receiving capacity. Such situation, as a rule, may arise due to the strive of workers to compensate for underproduction caused by long downtimes of a face for any reason. In the paper, a method is proposed that enables determining the maximum shift output per face. According to the technique described in the “Basic Provisions for Designing Underground Transport of New and Existing Coal Mines,” the average minute material flow, which determines the operational load on a belt conveyor, depends on the material feed time factor. Accepting the assumption that a coal shearer works the entire shift in a face, the limiting value of the material feed time factor is equal to 1. To determine the actual value of this factor, it is proposed to determine the face operating (production) time using actual planogram. The shift time is spent for preparatory and finishing operations, the face equipment and conveyor line troubleshooting and failure recovery, auxiliary service operations and, finally, operational and organizational downtimes. On the actual planogram, these time intervals are displayed by straight-line portions. Thus, the shift time minus downtime for any reason, represents the face production time. The ratio of these values represents the operation factor. Applying the operation factor allows to determine the maximum limiting face production, not only taking into account the volume of coal mined per cycle, but also based on coal cuttability and technical specifications of the face equipment. This enables us to determine the face production load that ensures safe operation of the belt conveyor.
About the AuthorV. M. Yurchenko
Cand. Sci. (Tech.), Assistant Professor of the Department of Mining Machines and Complexes
1. Yurchenko V. M. Features of the joint operation of face equipment and conveyor transport. Mining Informational and Analytical Bulletin (magazine) 2016, no. 9, pp. 165-171 (in Russ.).
2. Basic Provisions for Designing Underground Transport of New and Existing Coal Mines. M. IGD named after A. A. Skochinsky, 1986, 355 p. (in Russ.).
3. Kopylov K. N., Kubrin S. S., Zakorshmenniy I. M., Reshetniak S. N. Reserves of increase of efficiency of coal extraction sections of coal mines Ugol, 2019, (3), pp. 46-49.
4. Gładysiewicz L., Król R., Kisielewski W. Measurements of loads on belt conveyor idlers operated in real conditions (2019) Measurement: Journal of the International Measurement Confederation, 134, pp. 336-344. DOI: 10.1016/j.measurement.2018.10.068.
5. Kruczek P., Polak M., Wyłomańska A., Kawalec W., Zimroz R. Application of compound Poisson process for modelling of ore flow in a belt conveyor system with cyclic loading. International Journal of Mining, Reclamation and Environment, 2018, 32(6), pp. 376-391. DOI: 10.1080/17480930.2017.1388335.
6. Comparison of the loading methods for the driving roller of a belt conveyor in finite element analysis. ACM International Conference Proceeding Series, 2018, pp. 73-77. DOI: 10.1145/3230876.3230879.
7. Mrazek, J., Dynyby, V., Stary, F. Adaptive control of the belt conveyor preloading. Applied Mechanics and Materials, 2014, 486, pp. 62-65. DOI: 10.4028/www.scientific.net/AMM.486.62.
8. Ianǎşi A. C., Mihuţ N. M. Mechanical and geometrical characterization of the conveyors belts from mineral resources exploitation. Advanced Materials Research, 2014, 837, pp. 99-104. DOI:10.4028/www.scientific.net/AMR.837.99.
9. Hou Y.-F., Meng Q.-R. Dynamic characteristics of conveyor belts. Journal of China University of Mining and Technology, 2008, 18(4), pp. 629-633. DOI: 10.1016/S1006-1266(08)60307-7.
For citation: Yurchenko V.M. Operating Load of Belt Conveyor as a Reflection of Actual Planogram of Coal Shearer Operation in Integrated-Powered Face. Gornye nauki i tekhnologii = Mining Science and Technology (Russia). 2019;4(2):144-149. https://doi.org/10.17073/2500-0632-2019-2-144-149
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