Memorias de investigación
Ponencias en congresos:
On loader productivity, rock strength and explosive energy in metal mining
Año:2011
Áreas de investigación
  • Ciencias de la tierra,
  • Ingenieria civil
Datos
Descripción
Twenty production blasts in two open pit mines were monitored, in rocks with medium to very high strength. Three different blasting agents (ANFO, watergel and emulsion blend) were used, with powder factors ranging between 0.88 and 1.45 kg/m3. Excavators were front loaders and rope shovels. Mechanical properties of the rock, blasting characteristics and mucking rates were carefully measured. A model for the calculation of the productivity of excavators is developed thereof, in which the production rate results as a product of an ideal, maximum, productivity rate times an operating efficiency. The maximum rate is a function of the dipper capacity and the efficiency is a function of rock density, strength, and explosive energy concentration in the rock. The model is statistically significant and explains up to 92 % of the variance of the production rate measurements.
Internacional
Si
Nombre congreso
Sixth World Conference on Explosives and Blasting
Tipo de participación
960
Lugar del congreso
Lisboa
Revisores
Si
ISBN o ISSN
978-0-9550290-3-5
DOI
Fecha inicio congreso
18/09/2011
Fecha fin congreso
20/09/2011
Desde la página
461
Hasta la página
468
Título de las actas
Sixth EFEE World Conference on Explosives and Blasting
Esta actividad pertenece a memorias de investigación
Participantes
Grupos de investigación, Departamentos, Centros e Institutos de I+D+i relacionados
  • Creador: Grupo de Investigación: Ingeniería de Georrecursos y Modelización
  • Departamento: Ingeniería Química y Combustibles