Investigation of the limiting characteristics of dynamic fracture rocks on the example of the gabbro-diabase
Special features of dynamic fracture of rock — gabbro-diabase are considered. The method of testing and the approach for the prediction of strength-time dependence, based on the structural- time criterion are shown. Simple interpretation of the parameter of the incubation time is given on an example of mechanical rupture of the body. One of the many disadvantages of using the classical criterion of fracture is shown. Incubation times from experiments of the splitting test of gabbro-diabase by the “Brazilian test” and experiments on uniaxial compression are determined. Experimental and calculated tests with structural time-criterion strain-rate dependencies of the strength of gabbro-diabase are built.