TY - JOUR
T1 - Rock fails in shearing as a tuned critical system
AU - Che, Demeng
AU - Zhang, Weizhao
AU - Zhu, Zhiwei
AU - Ehmann, Kornel F.
N1 - Funding Information:
This work was supported by the National Science Foundation (NSF) under the Grant: CMMI-1301127 .
PY - 2018/10
Y1 - 2018/10
N2 - Shearing is the most widely exploited method to fracture and remove rock formations in many man-made rock-opening activities. During shearing, rock breaks into chips due to the periodic nucleation, propagation, and coalescence of numerous micro-cracks. The crack interactions along with the rock's complex physical properties lead to extreme challenges in reaching a consensus on the rock's failure behavior in shearing. In this paper, force-drop events, as a quantitative measure of the global rock breakage occurrence, were recorded and analyzed. A power-law distribution with a tunable cut-off between the frequency of the force-drop events and their magnitudes is shown. The obtained results, for the first time, reveal the rock's tuned critical behavior in shearing which is intrinsically similar to its failure behavior widely observed in earthquakes.
AB - Shearing is the most widely exploited method to fracture and remove rock formations in many man-made rock-opening activities. During shearing, rock breaks into chips due to the periodic nucleation, propagation, and coalescence of numerous micro-cracks. The crack interactions along with the rock's complex physical properties lead to extreme challenges in reaching a consensus on the rock's failure behavior in shearing. In this paper, force-drop events, as a quantitative measure of the global rock breakage occurrence, were recorded and analyzed. A power-law distribution with a tunable cut-off between the frequency of the force-drop events and their magnitudes is shown. The obtained results, for the first time, reveal the rock's tuned critical behavior in shearing which is intrinsically similar to its failure behavior widely observed in earthquakes.
KW - Rock shearing
KW - Tuned critical system
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U2 - 10.1016/j.ijrmms.2018.07.022
DO - 10.1016/j.ijrmms.2018.07.022
M3 - Article
AN - SCOPUS:85051256291
VL - 110
SP - 133
EP - 139
JO - International Journal of Rock Mechanics and Minings Sciences
JF - International Journal of Rock Mechanics and Minings Sciences
SN - 1365-1609
ER -