Combination of various laboratory tests to investigate rock burst

Lukas Gottsbacher, Wulf Schubert, Angelika Klammer, Robert Marschallinger, Fritz Zobl, Peter Hofmann, Richard Ketcham, Dave Edey

Research output: Chapter in Book/Report/Conference proceedingConference contributionResearchpeer-review

Abstract

The failure hazard rock burst is very dangerous as it can occur very suddenly and violent-ly. Due to the fact, that tunnel and mining projects are in deeper areas than ever, the im-portance of investigating this hazard is more relevant than ever.
The Graz University of Technology and the University of Salzburg are investigating rock burst with different laboratory tests to learn more about it. The test methods are uniaxial compression tests, acoustic emission tests, micro computed tomography and object based image analysis of thin sections of rock samples.
To simulate the high stress state of rock that is prone to rock burst, stress close to the failure stress is applied on the rock samples. Simultaneously, the acoustic emissions in the sample are measured to investigate acoustic events in the sample, which are generated by micro cracks. After that, µCT-scans of the loaded samples are performed to create 3D im-ages of the micro-cracks in the rock sample. Subsequently thin sections are made from the samples for an object based image analysis.
To evaluate the results various methods are used, from newly developed MATLAB codes to pattern recognition software to analyze the data. The findings allow a better un-derstanding of the underlying mechanism of rock burst and indicate the usefulness of var-ious testing methods to investigate the hazard.
Original languageEnglish
Title of host publicationRock Mechanics for Natural Resources and Infrastructure Development - Full Papers
Subtitle of host publicationProceedings of the 14th International Congress on Rock Mechanics and Rock Engineering (ISRM 2019), September 13-18, 2019, Foz do Iguassu, Brazil
EditorsSergio A.B. da Fontoura, Ricardo Jose Rocca, Jose Pavon Mendoza
PublisherCRC Press
Pages1700 - 1706
Number of pages6
Volume1
ISBN (Electronic)1000758370, 9781000758375
Publication statusPublished - 3 Sep 2019

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Keywords

  • Rock burst
  • Acoustic Emission
  • tunnelling

Cite this

Gottsbacher, L., Schubert, W., Klammer, A., Marschallinger, R., Zobl, F., Hofmann, P., ... Edey, D. (2019). Combination of various laboratory tests to investigate rock burst. In S. A. B. da Fontoura, R. J. Rocca, & J. P. Mendoza (Eds.), Rock Mechanics for Natural Resources and Infrastructure Development - Full Papers: Proceedings of the 14th International Congress on Rock Mechanics and Rock Engineering (ISRM 2019), September 13-18, 2019, Foz do Iguassu, Brazil (Vol. 1, pp. 1700 - 1706). CRC Press.