DEM Analysis of the P-Wave Anisotropy Response to the Microstructure of Sedimentary Rock Under Biaxial Compression

• Published in: Rock mechanics and rock engineering Vol. 57; no. 9; pp. 7149 - 7173
• Main Authors: Zheng, Lingxiao, Zhang, Fengshou, Liu, Liu, Peng, Ming
• Format: Journal Article
• Language: English
• Published: Vienna Springer Vienna 01.09.2024; Springer Nature B.V
• Subjects: Anisotropy; Axis movements; Bedding; Bedding structures; Civil Engineering; Compression; Crack closure; Cracks; Discrete element method; Earth and Environmental Science; Earth Sciences; Geophysics/Geodesy; Horizontal orientation; Longitudinal waves; Microcracks; Microstructure; Movement; Original Paper; P waves; Parameters; Particle motion; Sedimentary rocks; Seismic response; Seismic velocities; Seismic waves; Stress; Velocity; Wave velocity; Discrete element method (DEM); Sedimentary rock anisotropy; P-wave velocity; Crack fabric tensor; Bedding orientation; Microstructure

This study presents a method to characterize anisotropic microcracks and discontinuous bedding in rock using the discrete element method (DEM). We focus on the influence of microstructure on P-wave velocity anisotropy under both isotropic and anisotropic stress states. The methodology is applied to...