Transient Processes in Formation of Geotechnical Systems in Deep Open Pit Mines: Methodical Aspects

The authors describe the methodological approach to formation of geotechnical systems of deep open pit mines with regard to transient processes. Parameters and figures of subsystems of a geotechnical system, and their elements have a great number of interconnections and undergo changes within the space of life of an open pit. Their formation is considered as a set of stable functioning periods and transient processes. The terminological paradigm of structure, components and parameters of the geotechnical system of an open pit mine is described in the context of the open pit mine transport. The concept of adaptation of the technology and equipment subsystems during transient processes is presented as a mechanism of optimal functioning of the geotechnical system. The provision of their dynamic equilibrium is illustrated. Optimization of transportation as the most expensive process in open pit mining is based on integration of computer modeling techniques: geometrical, process simulation and economic mathematical. The key features of pitwall stability estimates in substantiation of the geotechnical system parameters are discussed. The approach to optimization of rock mass preparation by blasting on the basis of real-time adjustment of physical and mechanical parameters of rocks and rock mass data is described.