A double rock sample model for rockbursts

In this paper, a double rock sample model for studying the rockburst mechanism is presented. Based on the assumption that there exists a proportional relation between the number of microseismic events and microfractured elements, the theoretical microseismic event rate produced by the double rock sa...

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Bibliographic Details
Published in:International journal of rock mechanics and mining sciences (Oxford, England : 1997) England : 1997), 1997-09, Vol.34 (6), p.991-1000
Main Authors: Chen, Z.H., Tang, C.A., Huang, R.Q.
Format: Article
Language:English
Subjects:
Applied sciences
Buildings. Public works
Exact sciences and technology
Geotechnics
Soil mechanics. Rocks mechanics
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Summary:In this paper, a double rock sample model for studying the rockburst mechanism is presented. Based on the assumption that there exists a proportional relation between the number of microseismic events and microfractured elements, the theoretical microseismic event rate produced by the double rock sample loaded in series under uniaxial compression is obtained. By using a newly developed numerical code, RFPA2D, the progressive failure process and associated microseismic behavior of the twin rock samples are simulated, which shows that the spatial distribution of microseismic events develops progressively from disorder at the initial loading stage to order prior to the main shock. A laboratory experiment with the same setup as the double rock sample model is conducted in order to verify the theoretical results.
ISSN:1365-1609
1873-4545
DOI:10.1016/S1365-1609(97)80008-1