With observance of conditions of similarity physical modeling of processes of formation of destructive zones of shear (DZS) was performed for detailed research of deformation dynamics of systems of ruptures and blocks making its internal structure. On results of two series of experiments it is shown that formed fracture and block internal structure DZS has difficult, but regular and discrete deformation dynamics of development. It is realised through the deformation of blocks leading to selective existential segment activization of interblock contacts differentiated on type, presented DZS in the form of set of systems of various scale ruptures. During each moment of time extended ruptures in DZS, carried to the category active, are actually active selectively-discretely on their length at the expense of segmentation process. Each separate extended rupture in DZS does not happen simultaneously is active on all its length. Real activity its only separate segments quite often different on a sign of displacement on them possess. It is shown that existential step-type behaviour of deformation process in DZS is caused by internal properties elastic-viscous-plastic the environments, providing generation in it of deformation waves even in the conditions of external loading operating with constant speed.