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

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

Description

Title: On loader productivity, rock strength and explosive energy in metal mining
Author/s:
  • Sanchidrián Blanco, José Angel
  • Segarra Catasús, Pablo
  • López Sánchez, Lina María
Item Type: Presentation at Congress or Conference (Article)
Event Title: Sixth EFEE World Conference on Explosives and Blasting
Event Dates: 18/09/2011 - 20/09/2011
Event Location: Lisboa, Portugal
Title of Book: Proceecings of Sixth EFEE World Conference on Explosives and Blasting
Date: 2011
Subjects:
Faculty: E.T.S.I. Minas (UPM)
Department: Ingeniería Química y Combustibles [hasta 2014]
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

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.

More information

Item ID: 13232
DC Identifier: http://oa.upm.es/13232/
OAI Identifier: oai:oa.upm.es:13232
Deposited by: Memoria Investigacion
Deposited on: 29 Oct 2012 12:35
Last Modified: 21 Apr 2016 12:32
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