Tecnologia em Metalurgia, Materiais e Mineração
https://tecnologiammm.com.br/article/doi/10.4322/2176-1523.1234
Tecnologia em Metalurgia, Materiais e Mineração
Artigo Original

ANALYSIS OF BLASTING ROCKS PREDICTION AND ROCK FRAGMENTATION RESULTS USING SPLIT-DESKTOP SOFTWARE

ANÁLISE DA PREVISÃO DO DESMONTE DE ROCHAS E DOS RESULTADOS DA FRAGMENTAÇÃO UTILIZANDO O SOFTWARE SPLIT-DESKTOP

Souza, Júlio César de; Silva, Andrêvhity Carlos Santos da; Rocha, Suelen Silva

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Abstract

One way to optimize the rock blasting operation is to conduct detailed structural analysis of the rock mass. For this, it makes use of algorithms that allows analyze the degree of fragmentation by changing the geometrical and geomechanical parameters, such as the equations proposed by Kuznetsov (1973), used for studying the interaction between explosive and rock. In this context, this study aimed to compare the classical methodology for the fragmentation of rocks with the method of fragmentation analysis by image. The study was done through field data provided by Herval Quarry which were analyzed for evaluation of fragmentation through images of blasted material muck piles. Were analyzed the P50, P80 and P100 of granulometric distribution curves. The optimization of blasting was done by adjusting the mesh of the fire plan (burden and spacing) and stemming length.

Keywords

Kuz-Ram equations, Blasting, Rock fragmentation, Split-desktop.

Resumo

Uma maneira de otimizar a operação de desmonte de rochas é a realização de uma análise estrutural detalhada do maciço rochoso. Para isso, faz-se uso de algoritmos que permitem analisar o grau de fragmentação, alterando os parâmetros geométricos e geomecânicos, tais como as equações propostas por Kuznetsov (1973), utilizadas para estudar a interação entre o explosivo e a rocha. Neste contexto, este estudo teve como objetivo comparar a metodologia clássica para a previsão da fragmentação de rochas com o método de análise de fragmentação por imagem. O estudo foi feito por meio de levantamento de campo realizado na Pedreira Herval para avaliação da fragmentação através de tratamento de imagens obtidas na pilha de material desmontado. Foram analisados o P50, P80 e P100 das curvas de distribuição granulométrica. A otimização da detonação foi feita com o ajuste da malha do plano de fogo (afastamento e espaçamento) e o comprimento do tampão.

Palavras-chave

Equações de Kuz-Ram, Desmonte com explosivos, Fragmentação da rocha, Split-desktop

Referências

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