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Solid Earth An interactive open-access journal of the European Geosciences Union
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Preprints
https://doi.org/10.5194/sed-5-737-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/sed-5-737-2013
© Author(s) 2013. This work is distributed under
the Creative Commons Attribution 3.0 License.

  03 Jun 2013

03 Jun 2013

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This preprint was under review for the journal SE. A revision for further review has not been submitted.

Strength constraints of shallow crustal strata from analyses of mining induced seismicity

M. Alber1, R. Fritschen2, and M. Bischoff1,* M. Alber et al.
  • 1Engineering Geology, Ruhr-University Bochum, Germany
  • 2DMT GmbH & Co KG, Essen, Germany
  • *now at: BGR, Hannover, Germany

Abstract. Stress redistributions around large underground excavations such as coal mines may lead to failure of the surrounding rock mass. Some of these failure processes were recorded as seismic events. In this paper the different failure processes such as rock mass failure or the reactivation of faults are delineated from the seismic records. These are substantiated by rock mechanical analyses including laboratory strength tests on coal measure rocks obtained from underground drilling. Additionally, shear tests on discontinuities in coal measure rocks (slickensides in shale and rough sandstone joints) were conducted to grasp the possible variation of strength properties of faults. Numerical modeling was employed to evaluate the state of stress at the locations where seismic events did occur.

M. Alber et al.

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Status: closed (peer review stopped)
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M. Alber et al.

M. Alber et al.

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