The effect of temperature on the mechanical properties and workability of rock salt

• Autorzy: Małkowski Piotr , Bednarek Łukasz , Kotwica Krzysztof , Stopka Grzegorz

Identyfikatory

DOI

10.2478/ntpe-2019-0041

• Języki publikacji: EN

Abstrakty

EN

Underground salt mining accounts for about 16 percent of the total salt production worldwide. When excavating salt rock, the cutters of the road header come into contact with the rock. This produces friction and, consequently, a rise in temperature. Generally, as temperature increases, salt gradually loses its plasticity. The extent of these alterations depends on the presence of other minerals in the rock. This paper presents the results of laboratory tests on regularly shaped samples of salt. An analysis was performed of the results of compressive, tensile and induced-shear strength, and of Young's modulus, Poisson's ratio, cuttability index and side chipping angle. The testing was conducted on samples with a temperature of about 20°C and samples heated to 50°C and 80°C. The tests showed that as temperature increased, so did compressive and tensile strength, and longitudinal and transverse strain of salt. The temperature increase caused, however, a decrease in shear strength. The cuttability index and the side chipping angle also decreased when the heated samples were being cut. The percentage changes in the parameters within the 60-degree temperature range were as high as several dozen percent.

Słowa kluczowe

EN

rock salt testing; mechanical salt parameters; salt cutability; temperature change of salt

PL

sól kamienna; wskaźnik skrawalności; urabialność soli kamiennej

• Wydawca: STE GROUP ; De Gruyter
• Czasopismo: New Trends in Production Engineering
• Rocznik: 2019
• Tom: Vol. 2, Iss. 1
• Strony: 384--393
• Opis fizyczny: Bibliogr. 14 poz., rys., tab.

Twórcy

autor

Małkowski Piotr

• AGH University of Science and Technology, Poland

autor

Bednarek Łukasz

• AGH University of Science and Technology, Poland

autor

Kotwica Krzysztof

• AGH University of Science and Technology, Poland

autor

Stopka Grzegorz

• AGH University of Science and Technology, Poland

Bibliografia

• 1. Andrusikiewicz, W. (2008). Możliwość zmiany sposobu urabiania soli kamiennej w KS Kłodawa. Gospodarka Surowcami Mineralnymi, 24(3/2), pp. 173-183.
• 2. Cyran, K., Toboła, K. and Kamiński, P. (2016). Wpływ cech petrologicznych na właściwości mechaniczne soli kamiennej z LGOM. Biuletyn Państwowego Instytutu Geologicznego, 466, pp. 51-64, DOI: 10.5604/01.3001.0009.4572.
• 3. Garlicki, A. (2013). Salt mines in the world. In: Wieliczka Salt Mine – An Underground Treasure, A. Nowakowski ed., Universitat, pp. 15-34.
• 4. Iverson, B. D., Broome, S. T., Kruizenga, A. M. and Cordaro J. G. (2012). Thermal and mechanical properties of nitrate thermal storagesalts in the solid-phase. Solar Energy, 86, pp. 2897-2911.
• 5. Kolano, M., Flisiak D. (2013). Comparison of geo-mechanical properties of white rock salt and pink rock salt in Kłodawa salt diapir. Studia Geotechnica et Mechanica, XXXV(1), DOI: 10.2478/sgem-2013-0010.
• 6. Mortazavi, M., Heuss-Assbichler, S. and Shahri M. (2017). Hydrothermal systems in the salt domes of south Iran. Procedia Earth and Planetary Science, 17, pp. 913-916.
• 7. Ostadhassan, M., Tamimi N. (2014). Mechanical behavior of salt rock atelevated temperature. The 48th US Rock Mechanics Conference, Minneapolis, USA, ARMA 14-7122.
• 8. Pforr, H. (1975). Wytyczne Międzynarodowego Biura Mechaniki Górotworu do określania parametrów geomechanicznych skał i górotworu. Gliwice (unpublished – in Polish).
• 9. Phatthaisong, K., Sartkaew, S., Fuenkajorn, K. (2018). Effects of loadingrate and temperature on strength and deformability of Maha Sarakham salt. Songklanakarin J. Sci. Technol., 40(2), pp. 359-366.
• 10. Poborska-Młynarska, K. (2015). Współczesne techniki eksploatacji soli kamiennej w kopalniach podziemnych. Przegląd Górniczy, 12, pp. 140-146.
• 11. Powell, F. (1969). Ignition of Gases and Vapors. Ind. Engr. Chem., Vol. 61, no. 12, pp. 29-37.
• 12. Sartkaew, S., Fuenkajorn K. (2013). Effects of stress rate on uniaxial compressives trength of rock salt under 0-100oC. The 11th International Conference on Mining, Materials and Petroleum Engineering. November 11-13 2013, Chiang Mai, Thailand, pp. 13-20.
• 13. Sriapai, T., Walsri, Ch., Fuenkajorn, K. (2012). Effect of temperature on compressive and tensil estrengths of salt. Science Asia, 38, pp. 166-174.
• 14. Ulusay, R. & Hudson, J.A. ed. (2007). The Complete ISRM Suggested Methods for Rock Characterization. Testing and Monitoring: 1974-2006. ISRM Turkish National Group, Ankara.

Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).