Estimate of hourly productivity applied to elaboration and implementation of mining plans

• Autor(a) principal: Rodovalho,Edmo da Cunha
• Data de Publicação: 2014
• Outros Autores: Cabral,Ivo Eyer
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: REM. Revista Escola de Minas (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0370-44672014000200015
• topic: Mine planning; hourly productivity; multiple regressions; operational management

In order to elaborate a mine plan, it is necessary to adopt hourly production parameters for the equipment available for its execution. This equipment should be in synchrony with the productive capacity of the operational units in the mine for: rock drilling, blasting, loading and transporting ore. This study deals with the estimate of hourly production indexes for loading and transport obtained by the use of multiple regressions. Using a management system database from an operating mine, equations were generated to explain the productive cycle of each of the loading machines and dump trucks. Knowing the behavior of the principle variables that exert influence on the production schedule, it was possible to estimate the index and to guarantee high feasibility for the mine plan, considering the indexes obtained were very close to those executed. The model design was created in a simple manner, using statistical concepts and computational tools, being supported by good correlation between the variables. This factor was decisive in obtaining good results in the execution of the studied mining plan.