Laboratory investigations of fracture toughness and tensile strength for various rock types
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Tarih
2016
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Crc Press-Balkema
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Microfractures and discontinuities are the common structural features of the rock mass lead initiating and developing the brittle fractures in rocks. Fracture toughness is an intrinsic material property for the pre-exist cracks initiate fracture development and play a significant role in brittle fracturing. The Cracked Chevron-Notched Brazilian Disc (CCNBD) samples were tested to determine the fracture toughness of monsonite and sandstone samples. Since conducting fracture toughness tests are quite hard compared with the Brazilian test, the tensile strength can be determined by using the tensile fracturing parameters of rocks. Moreover, stress analysis obtained from the Extended Finite Element (XFEM) modelling confirmed a comprehensive relationship between tensile strength and tensile fracturing parameters of rocks. Based on the laboratory experiments, the tensile strength o f rocks can be used for the modelling of tensile fracturing and this will improve our understanding of rock fracturing behaviour utilising for the rock cutting and mining designs.
Açıklama
ISRM International Symoposium on Rock Mechanics and Rock Engineering - From the Past to the Future -- AUG 29-31, 2016 -- Cappadocia, TURKEY
Anahtar Kelimeler
Kaynak
Rock Mechanics and Rock Engineering: From The Past To The Future, Vol 1
WoS Q Değeri
N/A
