Estimation of abrasiveness impact on the parameters of rock-cutting equipment
- 1 — Tula State University
- 2 — Tula State University
- 3 — OOO «Skuratovsky Experimental Plant»
- 4 — State University of Management
- 5 — State University of Management
Development of equipment, which provides access to underground mineral deposits and their extraction, requires the use of all the accumulated experience and advanced scientific research in the area of mechanical rock cutting. The most important issues of using mechanical rock cutting tools are their wearability and consumption, which have an impact on technical and economic indicators of project efficiency. The paper describes Russian and foreign practices of estimating tool wear resistance, expressions to determine critical cutting speed, methods to evaluate tool consumption. It is demonstrated that wearability of mechanical tools and associated effects are to a large extent defined by rock abrasiveness. It is highlighted that in Russia the index is calculated using Baron-Kuznetsov method, which is briefly described in the paper. In many countries with a highly-developed mining industry, rock abrasiveness is estimated with a Cerchar Abrasiveness Index (CAI), recommended by the International Society for Rock Mechanics. Its description is also presented in the paper.
- Glatman L.B., Levankovskij I.A., Multanov S.I. Estimation of critical cutting speed for rock destruction by picks. Nauchnye soobshcheniya. IGD im. A.A.Skochinskogo. Мoscow, 1994. Iss. 300, p. 149-155 (in Russian).
- Zhabin A.B., Polyakov A.V., Averin E.A. A brief analysis of problems and solutions when upgrading the mining enterprise with modern equipment. Ugol’. 2018. N 1 (1102), p. 13-16. DOI: 10.18796/0041-5790-2018-1-13-16 (in Russian).
- Zhabin A.B., Polyakov A.V., Averin E.A. On the need of introduction a state standard for estimation of rock abrasiveness. Ugol’. 2018. N 11, p. 86-91. DOI: 10.18796/0041-5790-2018-11-86-91 (in Russian).
- Zhabin A.B., Averin E.A., Polyakov A.V. Integrated assessment of the complexity of mine construction projects. Ugol’. 2017. N 11, p. 60-63. DOI: 10.18796/0041-5790-2017-11-60-63 (in Russian).
- Levankovskij I.A. Calculation of the wear resistance of rotary picks during the operation of roadheaders. Sb. nauch. trudov. Akademiya gornykh nauk. Academy of Mining Sciences. Moscow, 1998. Iss. 1, p. 110-128 (in Russian).
- Malevich N.A. Roadheaders and equipment for excavation. Moscow: Nedra, 1971, p. 384 (in Russian).
- Zhabin A.B., Polyakov A.V., Averin E.A., Sarychev V.I. State of scientific researches in the field of rock destruction by picks at the turn of the century. Izvestiya TulGU. Nauki o Zemle. 2018. N 1, p. 230-247 (in Russian).
- Archard J.F. Contact and rubbing of flat surfaces. Journal of Applied Physics. 1953. Vol. 24. N 8, p. 981-988. DOI: 10.1063/1.1721448
- Alber M., Yarali O., Dahl F., Bruland A., Käsling H., Michalakopoulos T.N., Cardu M., Hagan P., Aydin H., Özarslan O. ISRM Suggested Method for Determining the Abrasivity of Rock by the CERCHAR Abrasivity Test. Rock Mechanics and Rock Engineering. 2014. Vol. 1. N 47, p. 261-266. DOI: 10.1007/s00603-013-0518-0
- Käsling H., Thuro K. Determining rock abrasivity in the laboratory. Rock Mechanics in Civil and Environmental Engineering – Proc EUROCK 2010. London: Taylor & Francis, 2010, p. 425-428.
- Mishnaevsky L.L. Mathematical modelling of wear of cemented carbide tools in cutting brittle materials. International Journal of Machine Tools and Manufacture. 1995. Vol. 35. N 5, p. 717-724. DOI: 10.1016/0890-6955(95)93040-D
- Plinninger R.J., Restner U. Abrasiveness testing, quo vadis? – a commented overview of abrasiveness testing methods. Geomechanics and Tunnelling. 2008. Vol. 1. N 1, p. 61-70. DOI: 10.1002/geot.200800007
- Rabinowicz E. Friction and wear of materials. New York: John Wiley & Sons. 1995, p. 336.
- Schimazek J., Knatz H. The influence of rock structure on the cutting speed and pick wear of heading machines. Gluckauf. 1970. Vol. 106, p. 274-278. (in German).