Numerical study on the dynamic fractures evolution around cavities in rocks

摘要：

A numerical code RFPA2D (Rock Failure Process Analysis), was used to simulate the initiation and propagation of fractures around pre-existing cavities in brittle rock. The dynamic loadings were applied to the rock specimens to investigate the mechanism of fractures evolution around single cavity. In addition, the evolution and interact of fractures between multiple cavities was investigated. The numerical simulated results reproduced tensile and remote fractures due to dynamic loading. Moreover, numerical results suggested that both the compressive wave and tensile wave could influence the propagation of tensile cracks. Especially the reflected tensile wave accelerated the propagation of tensile cracks.

作者: S.Y.Wang W.C.Zhu L.J.Su X.L.Liu C.A.Tang

作者单位: Department of Civil Engineering, Catholic University of America, Washington DC, USA, 20064, Centre for Rock Instability and Seismicity Research, Northeastern University, Shenyang, P.R.China,11 School of Civil Engineering, Xian University of Architecture and Technology 13 Yanta Road, Xian Sh Department of hydraulic and hydropower engineering, Tsinghua Unviersity, Chengfu Street, Haidian Dis School of Civil & Hydraulic Engineering Dalian University of TechnologyDalian, P. R. China, 116024

会议类型: 国际会议

会议名称: 2009年岩石力学国际研讨会

会议地点: 香港

会议语种:英文

页码: 1-5

在线出版日期: 2009-05-19（万方平台首次上网日期，不代表论文的发表时间）