Complex Rupture Process Of The 19 March 2013, Rudna Mine (Poland) Induced Seismic Event.pdf

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Preview of Complex Rupture Process of the 19 March 2013, Rudna Mine (Poland) Induced Seismic Event
🔗 Source: gfzpublic.gfz-potsdam.de
📊 Size: 964 KB
📄 Pages: 13 pages
⬇️ Downloads: 22

Summary

The article discusses a significant induced seismic event that occurred on March 19, 2013, at the Rudna Copper Mine in southeastern Poland. The event, with a magnitude of Mw 3.7, caused damage and trapped 19 miners, who were successfully rescued. Unlike typical mining-induced seismicity in the area, this event was unusual due to its larger magnitude, distance from the mining stopes, and association with a hazardous rockburst.

The authors utilized three monitoring networks—local (LUMINEOS) and regional surface networks, as well as an in-mine network—to determine rupture parameters and compare inversion results. They performed waveform and spectral analysis using different moment tensor (MT) inversion techniques to infer source properties.

Surprisingly, the inversion results varied significantly, ranging from a dominant thrust mechanism to a collapse-type rupture. The authors propose a complex rupture model to explain these discrepancies, suggesting that the rupture initially nucleated as a weaker thrust event along a pre-existing weakened surface and then transitioned into a more energetic collapse.

The LUMINEOS surface network showed potential in resolving both subevents, but standard MT decomposition methods were insufficient. The article introduces a new MT decomposition and fitting procedure tailored for analyzing collapse sources.

Description

The 2013 Rudna Mine collapse in Poland involved a complex rupture process, as revealed by local and regional moment tensor inversion, providing insights into the induced seismic event and subsequent collapse.

Technical Information

  • File Format: PDF
  • File Size: 964 KB
  • Pages: 13
  • Language: EN
  • Total Downloads: 22
  • Last Updated: 4 weeks ago

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