Observatorio de I+D+i UPM

Memorias de investigación
Communications at congresses:
TRANSMISSIBILITY OF BLASTING VIBRATIONS FROM ROCK TO SENSOR-PART 2
Year:2015
Research Areas
  • Engineering
Information
Abstract
Error in the measurement attributable to coupling has been assessed by the rock-to-mount, or coupling, transmissibility ?i.e. ratio of the velocity of the sensor mount to the velocity of the ground motion? from 2 to 200 Hz, at two velocity levels, 5 and 20 mm/s. Already published data (13 trials) and new gathered tests on a vibration exciter are considered. In this new campaign free placed, sandbagged, and anchored mounts on granite were tested from 1.6 to 40 Hz at one or two vibration levels. Two more techniques, in which the sensor mounts were fixed with thermal adhesive or a combination of duct tape and gypsum plaster, have been also investigated from 2 to 200 Hz at 5 and 20 mm/s. Free and sandbagged mounts lead to a weak coupling of the mounts to rock, with accurate measurements only below 17 Hz for free mounts and 10 Hz for sandbagged in the tested conditions. Above these frequencies, ground motion in the measurement can be modified by a factor of 0.16 to 1.21. Anchored, glued and plastered mounts achieve a stiff rock-to-mount coupling, ensuring consistent measurements for the frequencies commonly found in blasting independently of the vibration level and the mount characteristics.
International
Si
Congress
8th World Conference on Explosives and Blasting
960
Place
Lyon, Francia
Reviewers
Si
ISBN/ISSN
978-0-9550290-4-2
Start Date
27/04/2015
End Date
28/04/2015
From page
43
To page
52
Lyon Conference Proceedings. 8th World Conference on Explosives and Blasting Technique
Participants
  • Autor: Pablo Segarra Catasus (UPM)
  • Autor: Jose Angel Sanchidrian Blanco (UPM)
  • Autor: Iván del Castillo (Vibraquipo)
  • Autor: Ricardo Castedo Ruiz (UPM)
  • Autor: Lina Maria Lopez Sanchez (UPM)
Research Group, Departaments and Institutes related
  • Creador: Grupo de Investigación: Ingeniería de Georrecursos y Modelización
  • Departamento: Ingeniería Geológica y Minera
S2i 2020 Observatorio de investigación @ UPM con la colaboración del Consejo Social UPM
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