EFFECT OF GRANITE MICROSTRUCTURE ON ITS ANISOTROPIC BEHAVIORS USING IMAGE-BASED MODEL

摘要：

Rock contains soft and hard mineral grains, pore and microcracks, which can be considered as Griffith flaws, especially boundaries between mineral grains. In this paper, general-purpose digital image processing technologies are employed to characterize the microstructure and heterogeneity, consisting of the distribution of mineral grains and their boundaries, which is input into RFPA (Rock Failure Process Analysis code), and then using this model, Brazilian numerical tests of granite rock are carried out to study its anisotropic behaviors. The numerical results show that the distribution of mineral grains and their boundaries naturally cause mechanical anisotropy of rock. It play an important role on anisotropy of tensile strength.

作者: QINGLEI YU TIANHONG YANG HONGLEI LIU

作者单位: College of Resources & Civil Engineering,Box 138, Northeastern University, 110004, P.R.China

会议类型: 国际会议

会议名称: The Third International Conference on Nwe Development in Rock Mechanics and Engineering(NDRM2009)(第三届国际岩石力学与工程新进展学术会议)

会议地点: 三亚

会议语种:英文

页码: 231-234

在线出版日期: 2009-05-24（万方平台首次上网日期，不代表论文的发表时间）