1887

Abstract

Summary

Mining activity in Provence has left many underground voids that can cause land subsidence or collapses in areas of high population density. In the abandoned coal basin of Gardanne, the flooding of mine voids and fluctuations in the groundwater level induced many seismic events that have been recorded since the beginning of operational monitoring. An example is the seismic crisis of November 2012, where magnitude events > 2.5 were felt by the population.

In this context, the objective is to understand the mechanisms of the observed seismicity. This will clarify the relationships between seismicity and rising waters in old mine working, geology and local tectonics. This general aim will be pursued, thanks the availability of the high quality dataset of recording from the dense arrays managed by INERIS and BRGM.

We will focus on the spatio-temporal distribution of the seismicity, which allows to monitor the dynamics of faulting and to estimate the extension and mode of rupture of the fracture system. The present work is based on the observation and the characterization of the microseismicity in terms of the accurate hypocentral locations, local and moment magnitudes and focal mechanisms determination in order to characterize the status of the abandoned mine.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201413521
2015-06-01
2024-03-28
Loading full text...

Full text loading...

References

  1. Bennani, M.
    , 2012. Note d’expertise complémentaire relative aux événements microsismiques ressentis en surface dans la zone de Fuveau – Gréasque, dans le bassin minier de Gardanne., note INERIS DRS_12-126881-12578A, pp. 17.
    [Google Scholar]
  2. ContrucciI., KleinE., BigarreP., LizeurA., LomaxA., BennaniM.
    , Management of post-mining large-scale ground failures : blast swarms field experiment for calibration of permanent microseismic early-warning systems. Pure and Applied Geophysics, 2010, 167 (1–2): p. 43–62
    [Google Scholar]
  3. Contrucci, I., Bennani, M., Bigarré, P. & Dominique, P.
    , 2013, Activité microsismique et caractérisation de la détectabilité des réseaux de surveillance du bassin houiller de Gardanne, AGAP 2013, Nancy.
    [Google Scholar]
  4. Contrucci, I.
    , 2013. Détectabilité des réseaux de surveillance microsismique du bassin minier de Gardanne, rapport INERIS DRS-13-136284-07432A.
    [Google Scholar]
  5. Dominique, P.
    , 2014. Analyse préliminaire de la crise sismique de Fuveau (Bouches-du-Rhones), BRGM/RP-63592-FR.
    [Google Scholar]
  6. Dahm, T., Manthei, G., and Eisenblatter, J.
    (1999). Automated moment tensor inversion to estimate source mechanisms of hydraulically induced micro-seismicity in salt rock. Tectono- physics, 306(1):1–17.
    [Google Scholar]
  7. KinsherJ.
    , 2015. PhD thesis. Analysis and interpretation of microseismicty induced by a collapsing brine mining cavity as a basis for progress in hazard assessment of inaccesssible underground cavities.
    [Google Scholar]
  8. Lomax, A., J.Virieux, P.Volant and C.Berge
    , 2000. Probabilistic earthquake location in 3D and layered models: Introduction of a Metropolis-Gibbs method and comparison with linear locations, in Advances in Seismic Event LocationThurber, C.H., and N.Rabinowitz (eds.), Kluwer, Amsterdam, 101–134.
    [Google Scholar]
  9. Sen, A. T., Cesca, S., Bischoff, M., Meier, T., and Dahm, T.
    (2013). Automated full moment tensor inversion of coal mining-induced seismicity. Geophysical Journal International, page ggt300.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201413521
Loading
/content/papers/10.3997/2214-4609.201413521
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error