Microscopic analysis of shear bands formation in luna limestone under quasistatic triaxial loading conditions

• Autorzy: Cieślik J. , Godyń K.

Warianty tytułu

PL

Analiza mikroskopowa pasm ścinania próbek wapienia luna poddanych quasistatycznym trójosiowym obciążeniom

• Języki publikacji: EN

Abstrakty

EN

The article presents the results of microscopic analyses of shear bands of carbonate rocks subjected to triaxial compression. Strength tests were performed in axisymmetric loading conditions, at various confining pressures and strain rates. The layout and nature of phenomena occurring in shear bands at various strain rate loading conditions were analysed under the microscope on thin rock sections of damaged samples. The principal part of the study involves identification of damage types in shear bands, which mainly depend on the rock deformation rate and petrography. Also, quantitative analysis of particular types of damage in shear bands was performed and their dependence on the mechanical tests conditions. The last item discussed in this article is the quantitative analysis of the width of shear bands at various loading conditions.

PL

W artykule zaprezentowano wyniki analiz mikroskopowych pasm ścinania próbek skał węglanowych poddanych trójosiowemu ściskaniu. Testy wytrzymałościowe przeprowadzono w osiowo symetrycznym stanie obciążenia, przy różnych ciśnieniach okólnych oraz prędkościach obciążenia. Zniszczone próbki były przedmiotem analiz mikroskopowych na szlifach skalnych. Badano układ i charakter zjawisk występujących w pasmach ścinania przy różnych warunkach obciążenia. Zasadniczą część pracy stanowi identyfikacja typów zniszczenia w pasmach ścinania, zależnych w głównej mierze od prędkości odkształcenia i petrografii skały. Przeprowadzono również ilościową analizę udziału poszczególnych typów zniszczenia w pasmach ścinania oraz ich zależność od charakteru obciążeń mechanicznych. Ostatnim wątkiem poruszanym w artykule jest ilościowa analiza szerokości pasm ścinania przy różnych warunkach obciążenia.

Słowa kluczowe

EN

laboratory investigations; shear bands; microscopic analysis; quasistatic triaxial loading conditions

PL

badania laboratoryjne; pasma ścinania; analiza mikroskopowa; quasistatyczne trójosiowe obciążenia

• Wydawca: Instytut Mechaniki Górotworu PAN
• Czasopismo: Archives of Mining Sciences
• Rocznik: 2013
• Tom: Vol. 58, no. 2
• Strony: 317--332
• Opis fizyczny: Bibliogr. 26 poz., rys., tab., wykr.

Twórcy

autor

Cieślik J.

• AGH University of Science and Technology, Faculty of Mining & Geoengineering, Department of Geomechanics, Civil Engineering and Geotechnics, Al. A. Mickiewicza 30, 30-059 Krakow, Poland

autor

Godyń K.

• Strata Mechanics Research Institute of the Polish Academy of Sciences, ul. Reymonta 27, 30-059 Kraków, Poland

Bibliografia

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