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http://dx.doi.org/10.22704/ksee.2021.39.3.001

Source Mechanism Analysis and Simplified Modeling for Rockburst  

Choi, Byung-Hee (한국지질자원연구원)
Oh, Se-Wook (한국지질자원연구원)
Kim, Hyunwoo (한국지질자원연구원)
Jung, Yong-Bok (한국지질자원연구원)
Publication Information
Explosives and Blasting / v.39, no.3, 2021 , pp. 1-14 More about this Journal
Abstract
Rockburst is a sudden and violent failure of rock. During the failure process, excess energy is liberated as seismic energy, which in turn causes the surrounding rock mass to vibrate. The level of the ground vibration can reach a magnitude of over 4.5 in the Richter local scale. Thus, a rockburst can cause not only injury to persons, but also damage to both underground workings and surface structures. In this paper the source mechanism of rockburst is analyzed based mainly on the two reports of the Canadian Rockburst Research Program (CRRP). A simplified LS-DYNA modeling is also performed to identify the tensile failure patterns occurring in the remaining rock mass right after blasting in mine stope. The configuration of the simplified model will probably be useful in small-scale laboratory tests for investigating the source mechanism of rockburst.
Keywords
Rockburst; failure process; excess energy; source mechanism; Canadian Rockburst Research Program (CRRP); LS-DYNA modeling;
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