TY - GEN
T1 - Numerical study of rock failure due to the pre-existing crack initiation and propagation and hydraulic fractures interaction
AU - Wang, S. Y.
AU - Lam, K. C.
AU - Au, S. K.
AU - Su, Li-Jun
AU - Yang, X. Q.
PY - 2006
Y1 - 2006
N2 - Rock is a very heterogeneous material, containing various types of weaknesses such as gain boundaries, pores, and cracks and other defects. When rock is subjected to surrounding loading or the increase of hydraulic pressure due to rainstorm, the pre-existing fractures will initiate or propagate at the point of least resistance, which may cause failure of the entire structure of slope, dam and so on. By using Flow-Rock Failure Process Analysis code, F-RFPA2D. Firstly, a numerical simulation and similar materials experiment on rock samples with two pre-existing cracks without hydraulic pressure were conducted to investigate the initiation, propagation, coalescence of cracks and failure mechanism of rock considering the heterogeneity of rock; secondly, another sample with two pre-existing cracks subjected to hydraulic pressure under the loading conditions of different k0 is used to investigate the behavior of hydraulic fractures evolution, and their coupling action. Numerical results reproduce the process of pre-existing cracking evolution process which agreed with the experimental results.
AB - Rock is a very heterogeneous material, containing various types of weaknesses such as gain boundaries, pores, and cracks and other defects. When rock is subjected to surrounding loading or the increase of hydraulic pressure due to rainstorm, the pre-existing fractures will initiate or propagate at the point of least resistance, which may cause failure of the entire structure of slope, dam and so on. By using Flow-Rock Failure Process Analysis code, F-RFPA2D. Firstly, a numerical simulation and similar materials experiment on rock samples with two pre-existing cracks without hydraulic pressure were conducted to investigate the initiation, propagation, coalescence of cracks and failure mechanism of rock considering the heterogeneity of rock; secondly, another sample with two pre-existing cracks subjected to hydraulic pressure under the loading conditions of different k0 is used to investigate the behavior of hydraulic fractures evolution, and their coupling action. Numerical results reproduce the process of pre-existing cracking evolution process which agreed with the experimental results.
UR - https://www.scopus.com/pages/publications/33845453661
UR - https://www.scopus.com/record/pubmetrics.uri?eid=2-s2.0-33845453661&origin=recordpage
U2 - 10.1061/40862(194)36
DO - 10.1061/40862(194)36
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 0784408629
SN - 9780784408629
SP - 268
EP - 275
BT - Geotechnical Special Publication
T2 - Soil and Rock Behavior and Modeling
Y2 - 6 June 2006 through 8 June 2006
ER -