Preprints
https://doi.org/10.5194/sed-5-737-2013
https://doi.org/10.5194/sed-5-737-2013

  03 Jun 2013

03 Jun 2013

Review status: 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.

 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement
 
Status: closed (peer review stopped)
Status: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
Printer-friendly Version - Printer-friendly version Supplement - Supplement

M. Alber et al.

M. Alber et al.

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