Journal
JOURNAL OF CENTRAL SOUTH UNIVERSITY
Volume 21, Issue 1, Pages 373-380Publisher
JOURNAL OF CENTRAL SOUTH UNIV TECHNOLOGY
DOI: 10.1007/s11771-014-1950-3
Keywords
rock mechanics; rock burst proneness; prediction; accumulative acoustic emission counts; Weibull statistical distribution
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Funding
- National Basic Research Program (973 Program) of China [2010CB226804]
- National Natural Science Foundation of China [11202108]
- Natural Science Foundation of Jiangsu Province, China [BK20130189]
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Rock burst is a severe disaster in mining and underground engineering, and it is important to predict the rock burst risk for minimizing the loss during the constructing process. The rock burst proneness was connected with the acoustic emission (AE) parameter in this work, which contributes to predicting the rock burst risk using AE technique. Primarily, a rock burst proneness index is proposed, and it just depends on the heterogeneous degree of rock material. Then, the quantificational formula between the value of rock burst proneness index and the accumulative AE counts in rock sample under uniaxial compression with axial strain increases is developed. Finally, three kinds of rock samples, i.e., granite, limestone and sandstone are tested about variation of the accumulative AE counts under uniaxial compression, and the test data are fitted well with the theoretic formula.
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