Rock Fracture Mechanics: Principles, Design, and Applications

analysis applied behaviour blasthole borehole boundary Brazilian disk chevron-notched compressive crack extension crack growth crack initiation crack length crack propagation crack tip stress critical density dimensionless distribution dynamic fracture effect elastic energy release rate experimental finite element follows Fract fracture criterion fracture initiation fracture mechanics fracture process fracture propagation fracture toughness testing fracture toughness values geometry given by equation Granite Griffith hydraulic fracturing I-II fracture Ingraffea J-integral K₁ KIIC limestone maximum method microcracks mixed mode I-II mode I fracture mode I-II loading non-linear normal stress notch obtained Ouchterlony parameters plane strain plane stress plastic zone Poisson's ratio precracking principal stress Proc pure mode radial cracks rock fracture rock mass rock materials Rock Mech rockbursts Sandstone SC3PB shear stress shown in Figure strain energy release stress concentration stress intensity factor Symp tensile strength tensile stress uniaxial Weibull Weibull distribution Young's modulus