The Cutting Resistance of Rock Salt in Function of Temperature

• Autorzy: Kotwica Krzysztof , Stopka Grzegorz

Identyfikatory

DOI

10.2478/ntpe-2020-0017

• Języki publikacji: EN

Abstrakty

EN

Currently over then 16 percent of the total worldwide salt production is excavated in underground mines. Salt deposits often lie at great depths up to 1000 m, where the temperature of the surrounding rocks reaches 50°C and even exceeds it. A large part of it is exploited using mechanical methods, mainly with the use of road headers and continuous miners. When excavating salt rock, the cutters of the road header mining head come into contact with the rock. This generate friction and in consequence a rise in temperature. In AGH University of Science and Technology the laboratory tests were carried out to determine the effect of temperature on cutting resistance and selected mechanical properties of rock salt. On the special laboratory test stand the rock salt sample was cutted at three different temperatures - 20, 50 and 80°C. The cuttability index and the side chipping angle were measured for each temperature. Additionally the same tests were performed in the case of salt sample after cooling to room temperature. The selected mechanical parameters of rock salt - compressive, tensile and shear strength were also measured for the same temperature values. The obtained results were compared and described in the paper.

Słowa kluczowe

EN

rock salt; cuttability index; workability; laboratory tests; temperature change of salt

PL

sól kamienna; urabialność; testy laboratoryjne; wskaźnik skrawalności

• Wydawca: STE GROUP ; De Gruyter
• Czasopismo: New Trends in Production Engineering
• Rocznik: 2020
• Tom: Vol. 3, Iss. 1
• Strony: 211--220
• Opis fizyczny: Bibliogr. 17 poz., rys., tab.

Twórcy

autor

Kotwica Krzysztof

• AGH University of Science and Technology, Poland

autor

Stopka Grzegorz

• AGH University of Science and Technology, Poland

Bibliografia

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Uwagi

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