Joints mapping with commercial monitoring tools-techniques, results and lessons

Segarra Catasus, Pablo and Sanchidrián Blanco, José Angel and Pérez Fortes, Ana Patricia and Navarro Miguel, Juan and Paredes Bartolomé, Carlos (2019). Joints mapping with commercial monitoring tools-techniques, results and lessons. In: "10th EFEE World Conference on Explosives and Blasting", 15-18 Septiembre 2019, Helsinki, Finlandia. ISBN 978-0-9550290-6-6. pp. 177-187.

Description

Title: Joints mapping with commercial monitoring tools-techniques, results and lessons
Author/s:
  • Segarra Catasus, Pablo
  • Sanchidrián Blanco, José Angel
  • Pérez Fortes, Ana Patricia
  • Navarro Miguel, Juan
  • Paredes Bartolomé, Carlos
Item Type: Presentation at Congress or Conference (Article)
Event Title: 10th EFEE World Conference on Explosives and Blasting
Event Dates: 15-18 Septiembre 2019
Event Location: Helsinki, Finlandia
Title of Book: Proceedings 10th EFEE World Conference on Explosives and Blasting
Date: 2019
ISBN: 978-0-9550290-6-6
Subjects:
Faculty: E.T.S.I. de Minas y Energía (UPM)
Department: Ingeniería Geológica y Minera
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

The intersections of discontinuities with the rock face have been assessed in two quarry blasts through photogrammetry. Geotechnical conditions within the rock mass are also investigated from 2D oriented photographs of the blasthole walls from measurements with optical televiewer in the same blasts. One operator manually analysed the in-hole photographs, while two mapped manually discontinuities in the 3D photogrammetric models. The orientation of discontinuities and spacing between them are discussed and applied to assess the rock factor in the xp-frag model. Uncertainty in rock mass characteristics due to the measuring conditions is assessed and their effect on the resulting fragmentation assuming constant blasting parameters discussed. The bias due to the operator leads to a moderate relative difference in fragmentation of about ±15%, while the effect of the monitoring tool, sampling direction and image scale involves significant changes in fragmentation; photogrammetry provides coarser fragmentation than televiewer by a factor of 1.38 to 2.45, depending on the percentile considered.

Funding Projects

TypeCodeAcronymLeaderTitle
Horizon 2020730294SLIMUNIVERSIDAD POLITECNICA DE MADRIDSustainable Low Impact Mining solution for exploitation of small mineral deposits based on advanced rock blasting and environmental technologies

More information

Item ID: 64656
DC Identifier: http://oa.upm.es/64656/
OAI Identifier: oai:oa.upm.es:64656
Deposited by: Memoria Investigacion
Deposited on: 20 Oct 2020 06:39
Last Modified: 20 Oct 2020 06:39
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