Aplicação da espoleta eletrônica

Abstract

Since the beginning of the use of explosives in mining, in order to optimize the process of rock blasting, there is need for uniform initiation system that is safe, and get a satisfactory result. Simultaneously, this development of explosives and mining methods, evolved initiation systems, starting from the inaccurate "traces" of gunpowder to the current electronic initiation systems, which present scale of milliseconds and can be started by radio frequency. Therefore, the use of technology allows electronic initiation system best fit the timing of the sequence of detonation, a factor of paramount importance in the final result of the dismantling. This system permits greater flexibility in the choice of time and greater safety than pyrotechnical systems because of their accuracy and wide window from time programmable ranging from 0 to 20000 ms. Thus, these features allow the plans of fires for each rock type or situation. In this work, the Electronic System of Initiation that will be analyzed is the Smartshot Detnet company, currently used by the Chemical Industries Britanite Sossego Mine in Canaan-PA. As analysis tool was used curves and histograms of particle size distribution generated by the program WIPFRAG from piles of fragmented rock in the months of January and October 2010, provided by the laboratory of UFOP - Universidade Federal de Ouro Preto.