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Related Experiment Video

Updated: Nov 13, 2025

Data Processing Methods for 3D Seismic Imaging of Subsurface Volcanoes: Applications to the Tarim Flood Basalt
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Complexities of underground mining seismic sources.

Lindsay M Linzer1,2, Mark W Hildyard3, Johan Wesseloo4

  • 1SRK Consulting (South Africa), 265 Oxford Road, Illovo 2196, South Africa.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|March 15, 2021
PubMed
Summary
This summary is machine-generated.

Mining environments significantly alter seismic source parameters. Pillar failure analysis in tabular mining reveals that seismic moments are less representative of the actual source due to mining excavations (stopes).

Keywords:
dynamic modellingmining-induced seismicitymoment tensorpillarsstopes

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Area of Science:

  • * Mining Seismology
  • * Rock Mechanics
  • * Numerical Modeling

Background:

  • * Seismic source parameters are crucial for understanding rock failure events in mining.
  • * Previous studies often assume idealized conditions, neglecting the influence of the mining environment.
  • * Tabular mining environments present unique challenges due to the presence of excavations (stopes) and pillars.

Purpose of the Study:

  • * To numerically investigate how the mining environment, specifically stopes and pillar types, affects seismic source parameters.
  • * To determine if calculated seismic source parameters reflect the true pillar failure mechanism or are influenced by the stope source.
  • * To assess the reliability of seismic moment as a robust indicator of pillar failure in tabular mining.

Main Methods:

  • * Utilized elastodynamic numerical modeling software (WAVE3D) to create synthetic seismic events.
  • * Simulated seismic inversions for scalar moment, corner frequency, source radius, stress drop, and moment tensor.
  • * Analyzed the influence of mining stopes and different pillar configurations on seismic waveforms and source parameters.

Main Results:

  • * The presence of mining stopes and specific pillar designs significantly impacts calculated seismic moment and other source parameters.
  • * Seismic source parameters derived from waveforms in tabular stoping environments are a combination of stope and pillar sources.
  • * The seismic moment calculated for pillar failure is less representative of the actual crushing or shearing source than previously assumed.

Conclusions:

  • * The mining excavation (stope) acts as a significant secondary source, influencing seismic inversions.
  • * Seismic moment, often considered a robust measure, may be overestimated or misinterpreted in tabular mining settings.
  • * Future seismic monitoring and analysis in tabular mines must account for the complex interaction between stopes and pillars to accurately assess rock failure events.