... ABSTRACT: This paper introduces the use of stochastic methods in computing the dynamic fracture strength of rock due to blasting and compares the results with a deterministic method. Dynamic fracture strength is a function of rock properties density, p-wave velocity, s-wave velocity...

... as in the ductile regime. In estimates of lithospheric strength Byerlee's (1978) frictional law is ordinarily assumed for the brittle regime (e.g. Goetze & Evans 1979,Braee & Kohlstedt 1980) since the frictional strength of rocks is, lower than the fracture strength and is independent of temperature up...

... geomechanics piston experiment fracture strength Reservoir Characterization strength triaxial compression stress state minimum compression intermediate principal stress fracture characterization triaxial stress state Dunham dolomite general triaxial stress state fracture Upstream Oil & Gas...

..., microfracturing activity begins at low stresses and accelerates rapidly as the fracture strength is approached. In creep tests, similar microfracturing occurs in time, resulting in creep. All inelastic properties of brittle rocks can be explained by this brittle process. As the fracture strength is approached...

... % of fracture strength. Stress - strain - diagrams for deformations longitudinal and lateral to the direction of uniaxial compression are rare. In this article such curves are collected and scrutinized. These curves indicate for different rocks, that the deformation perpendicular to the direction of stress...

... breakage perpendicular wave front reflection Upstream Oil & Gas impulsive load breakage fracture strength fracture loading propagation tensile strength fracture pattern transient stress wave disturbance reaction Rinehart 5.7 Reaction of rock to impulsive loads La reaction de la roche...