Deep rock bears dynamic loads such as machinery, blasting and disturbance in the mining process. The fracture mechanism of deep is a necessary prerequisite for engineering design analysis. To study under high situ stress, mudstone sandstone were selected research objects. mechanical properties energy dissipation assessed by using 50 mm diameter separated Hopkinson test device. According to simi...

Contact mechanics is related to the deformation study of solids that meet each other at one or more points. The physical and mathematical formulation of the problem is established upon the mechanics of materials and continuum mechanics and focuses on computations involving bodies with different characteristics in static or dynamic contact. Contact mechanics gives essential information for the s...

The fracture front in concrete, as well as rock, is blunted by a zone of microcracking, and in ductile metals by a zone of yielding. This blunting causes deviations from the structural size effect known from linear elastic fracture mechanics (LEFM). The size effect is studied first for concrete or rock structures, using dimensional analysis and illustrative examples. Fracture is considered to b...

Acoustic emission (AE), recorded during uniaxial compressive loading with constantly increasing stress and stepped increments until the fracture of prismatic marble specimens, were analyzed in terms non-extensive statistical mechanics (NESM). Initially introduced by Tsallis, NESM has proven to be an autonomous robust theoretical framework for studying mechanisms damage evolution processes exper...