Simulation of roof caving in while conducting excavation

Abstract

Peculiarities of geo-environment evolution as a nonlinear dynamic system with the self-organized limiting feature are discussed. Calculations of the initial and subsequent roof cavings for different advancing rates were fulfilled. Special attention was given to the study of unsteady nonequilibrium deformation process in the roof at high face advancing rate. It is shown that other features of such systems are the existence of calm zones in the area of looming crisis and peculiarities of slow dynamics of deformed systems can be sure portents of the fact that the process of destruction epicenter formation is moving to become a superfast catastrophic evolution stage