Gestão de fragmentação no desmonte de rochas.

The paper describes the research carried out in the application of complexity analysis in order to evaluate the performance of the rock blasting process in mining. The main objective of the research is the development of a new method to allow the identification of a robust solution for managing rock fragmentation and to plan the process so that productivity targets can be achieved. The research uses complexity analysis tools introducing a particular approach for complex system analysis in min-ing and in rock blasting. The results indicate that the proper understanding of the correlations between the key-variables in blasting provides important benefits in the decision making process in the highly uncertain environment of rock blasting. The search for a robust system has proven to be more relevant than the search for a theo-retically optimum solution, as the levels of robustness and complexity can be used to compare different models and to measure the adherence of such models to the actual field data. [ABSTRACT FROM AUTHOR]