Failure and mechanical behavior of transversely isotropic rock under compression-shear tests: Laboratory testing and numerical simulation

• DOI: 10.1016/j.engfracmech.2020.107389
• Publication Date: 2020-11-02T05:46:37Z
• Authors: Ri-hong Cao; Rubing Yao; Tao Hu; Changsong Wang; Kaihui Li; Jingjing Meng
• Keywords: Transverse isotropy; Bed; Bedding

The failure and mechanical behavior of transversely isotropic rock are significantly affected by the original bedding planes. Until now, few studies have been performed to investigate influence geometrical parameters planes on fracture characteristics rocks under planar shear loading conditions. For this purpose, experimental numerical compression-shear tests double-notched specimens conducted fracturing loading. study that focuses plane inclination load, pattern AE evolution, six angles is in study. Based flat joint contact model (for matrix) smooth plane) PFC2D (particle flow code), microscale process with different inclinations simulated analyzed. results show has an important load pattern, maximum minimum loads obtained for 30° 60°, respectively. Moreover, strength spacing also play role loads. Higher wider result higher In addition, a moderate angle, tends form cracks cut through matrix. However, decrease strength, more fractures along