On loader productivity, rock strength and explosive energy in metal mining

Sanchidrián Blanco, José Angel; Segarra Catasús, Pablo y López Sánchez, Lina María (2011). On loader productivity, rock strength and explosive energy in metal mining. En: "Sixth EFEE World Conference on Explosives and Blasting", 18/09/2011 - 20/09/2011, Lisboa, Portugal. pp. 461-468.

Descripción

Título: On loader productivity, rock strength and explosive energy in metal mining
Autor/es:
  • Sanchidrián Blanco, José Angel
  • Segarra Catasús, Pablo
  • López Sánchez, Lina María
Tipo de Documento: Ponencia en Congreso o Jornada (Artículo)
Título del Evento: Sixth EFEE World Conference on Explosives and Blasting
Fechas del Evento: 18/09/2011 - 20/09/2011
Lugar del Evento: Lisboa, Portugal
Título del Libro: Proceecings of Sixth EFEE World Conference on Explosives and Blasting
Fecha: 2011
Materias:
Escuela: E.T.S.I. Minas (UPM) [antigua denominación]
Departamento: Ingeniería Química y Combustibles [hasta 2014]
Licencias Creative Commons: Reconocimiento - Sin obra derivada - No comercial

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Resumen

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.

Más información

ID de Registro: 13232
Identificador DC: http://oa.upm.es/13232/
Identificador OAI: oai:oa.upm.es:13232
Depositado por: Memoria Investigacion
Depositado el: 29 Oct 2012 12:35
Ultima Modificación: 21 Abr 2016 12:32
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