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2019 | vol. 2(1) cz.I Part I: Modern Machines and Technologies for Mining | 186--194
Tytuł artykułu

The New Method for Assessing Rock Abrasivity in Terms of Wear of Conical Picks

Autorzy
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
During the exploitation of mineral raw materials, a cutting tool is an element that is directly in contact with the unmined stone being cut. The most commonly used cutting tools include conical picks. The increasing pressure to reduce mining costs causes an increasing demand for affordable and reliable ways to increase the reliability of mining machines. Abrasive wear is the most common process affecting the wear of shearer picks, hence a good and simple laboratory method for assessing rocks abrasivity is needed. The new method was developed in the aspect of selection of conical picks with appropriate protection of the pick working part, increasing its durability. The method involves the assessment of mass abrasive wear of a standard steel pin and rock sample, and the determination of the abrasivity index Wz of the tested rock, as the ratio of the mass loss of the steel pin to the mass loss of the rock sample. The article presents the procedure of conducting tests, construction of a laboratory test stand and the use of the developed method to assess the abrasivity of gangue rocks occurring in the currently cut tunnel excavations of Polish hard coal mines. (original abstract)
Twórcy
autor
  • AGH University of Science and Technology Kraków, Poland
Bibliografia
  • Bołoz Ł. (2018). Results of a study on the quality of conical picks for public procurement purposes. In: Proceedings of the international conference on Human safety in work environment: operating machinery and equipment: Integrated Management Systems: Quality - Environment - Safety, 23-27 October 2018, Gdańsk - Nynashamn - Sztokholm - Tallin - Sztokholm - Nynashamn - Gdańsk, pp. 687- 693.
  • Käsling H., Thuro K. (2010). Determining abrasivity of rock in the laboratory. Engineering Geology. Technische Universität München, Germany, pp. 1973- 1980.
  • Kotwica K. (2018). Atypical and innovative tool, holder and mining head designed for roadheaders used to tunnel and gallery drilling in hard rock. Tunnelling and Underground Space Technology, 82, pp. 493-503.
  • Krauze K., Bołoz Ł., Wydro T. (2015). Parametric factors for the tangential-rotary picks quality assessment. Archives of Mining Sciences, 60(1), pp. 265-281.
  • Megapixl (2019). Poland provinces maps: https://www.megapixl.com/polandprovinces-maps-illustration-31515681
  • Mucha K., Krauze K. (2018). Planning of experiment for laboratory tests on rock abrasivity. Mining - Informatics, Automation and Electrical Engineering 3, pp. 17- 24.
  • Mucha K. (2019). Ścierność skał w aspekcie prognozowania zużycia noży kombajnowych. (Rock abrasivity in terms of forecasting the abrasive wear of cutting picks). PhD Thesis, AGH University of Science and Technology, Kraków, Poland.
  • Plinninger R. J., Restner U. (2008). Abrasivity testing, Quo Vadis? - A commented overview of abrasivity testing methods. Geomechanics and Tunnelling 1(1), pp. 61-70.
  • Plinninger R.J., Kasling H., Thuro K., Spaun G. (2003). Testing conditions and geomechanical properties influencing the Cerchar abrasiveness index (CAI) value. International Journal of Rock Mechanics and Mining Sciences, 40, pp. 259- 263.
  • Torrijo E.J., Garzón-Roca J., Company J., Cobos G. (2019). Estimation of Cerchar abrasivity index of andesitic rocks in Ecuador from chemical compounds and petrographical properties using regression analyses. Bulletin of Engineering Geology and the Environment 78(4), pp. 2331-2344.
  • Wikipedia (2019). Poland in Europe: https://commons.wikimedia.org/wiki/File:EUPoland.svg
  • Yarali O., Yaşar E., Bacak G., Ranjith P.G. (2008). A study of rock abrasivity and tool wear in coal measures rocks. International Journal of Coal Geology, 74, pp. 53- 66.
  • Yaşar S., Yilmaz A.O. (2016). Tool wear prediction with different models for medium strength rocks. In: 13th International Conference Underground Construction, Prague 2016, CEK CUM., 23-25 May 2016, 1(1), pp.1-10.
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.ekon-element-000171589019

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