Wyznaczanie odporności skał na pękanie na przykładzie granitu ze złoża Grabina Śląska

• Autorzy: Korzec A.

Warianty tytułu

EN

Determination of rock fracture toughness based on measurements of the Grabina Śląska granite

• Języki publikacji: PL

Abstrakty

EN

This paper discusses some aspects of rock fracture mechanics which should be considered in the design of excavations and slopes stability analyses in jointed rock masses. Fracture toughness is a key parameter in a fracture criterion commonly used to predict crack initiation and propagation. Such a criterion is widely known but still not applied in practical geo-engineering calculations because of the inherent complexity of rock masses. A review oftensile fracture toughness measurement methods ofrocks is presented, with a detailed description of the chevron bend method employed to determine the tensile fracture toughness of the Grabina Śląska granite with consideration of the material micro-structure. Noticeable differences in the magnitude of this parameter in three orthogonal directions have been observed, as their three values are equal to 0.78 MPa m1/2, 1.24 MPa m1/2 and 1.43 MPa m1/2, with variations of about 10%.

Słowa kluczowe

PL

kryterium pęknięć; odporność skał na pękanie; granit; metoda chevron bend

EN

fracture criterion; rock fracture toughness; granite; chevron bend method

• Wydawca: Państwowy Instytut Geologiczny - Państwowy Instytut Badawczy
• Czasopismo: Przegląd Geologiczny
• Rocznik: 2013
• Tom: Vol. 61, nr 10
• Strony: 576--582
• Opis fizyczny: Bibliogr. 18 poz., rys., wykr.

Twórcy

autor

Korzec A.

• Instytut Budownictwa Wodnego Polskiej Akademii Nauk, ul. Kościerska 7, 80-328 Gdańsk

Bibliografia

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