Qualification of the microseismic monitoring technique applied to the risk of collapse in iron ore mines

Gloria Senfaute 1 Mohamad Khir Abdul-Wahed 2 Jack-Pierre Piguet 2 Jean-Pierre Josien 1
1 INERIS - Institut National de l'Environnement Industriel et des Risques
2 LAEGO - Laboratoire Environnement Géomécanique et Ouvrages
Abstract : Experiments carried out in a working iron mine validated the microseismic monitoring technique as a means of detecting fracture noise emissions regarded as signals indicating an incipient collapse. In the experiment surface recordings were made of the microseismic signals corresponding to fractures and local collapse phenomena generated at the mine bottom by deliberately destroying pillars. The pillar removal operations and the collapse of the roof were systematically correlated with a series of microseismic events. The experiment served to validate the microseismic monitoring technique as a means of detecting surface precursors of a collapse, to demonstrate the effectiveness of the technique, and to calibrate the principal parameters of a microseismic monitoring System adapted to detection and monitoring in areas where there is a risk of collapse.
Mots-clés : ECOUTE MICROSISMIQUE EFFONDREMENT TORPILLAGE DEPILAGE
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Conference papers
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  • HAL Id : ineris-00972194, version 1
  • INERIS : PU-2000-011

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Gloria Senfaute, Mohamad Khir Abdul-Wahed, Jack-Pierre Piguet, Jean-Pierre Josien. Qualification of the microseismic monitoring technique applied to the risk of collapse in iron ore mines. International symposium of the international society for rock mechanics (EUROCK 2000), Mar 2000, Aachen, Germany. ⟨ineris-00972194⟩

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