A numerical study on 2-D compressive wave propagation in rock masses with a set of joints along the radial direction normal to the joints

A new method for processing wave amplitude for numerical analysis in rock dynamics

“…Most of the numerical results in [9] and the numerical results in the Appendix in [3] were obtained by using the new data processing method. For the purpose of illustrating the last advantage of the proposed method described in the previous paragraph, numerical data as shown in Fig.…”

“…In wave propagation problems in rock dynamics, the time histories of velocity and stress waves are often required to be recorded and processed for a large amount of grid-points or centroids [1,2]-usually the more the better. For practical 2-dimensional rock dynamic problems (such as blasting wave from a borehole [3]) the wave amplitude changes with the radial distance from the center of the borehole where the wave originates. Even for 2-dimensional wave problems in elastic rocks, the wave amplitude also gradually attenuates with the radial distance due to geometry damping [4]; by contrast, the amplitude of 1-dimensional wave (such as seismic wave) does not attenuate in elastic rock [1,4].…”

Numerical Modeling of Wave Transmission Across Rock Masses with Nonlinear Joints

“…Cai and Zhao (2000), Fan et al (2004), Zhao et al (2006a), Barla et al (2010) and Sun et al (2013) conducted a series of numerical studies on normally incident wave propagation across a single or a set of parallel rock joints. Lei et al (2007), Deng et al (2012), and Deng et al (2014a, b) studied oblique incidence across a set of parallel joints and intersecting rock joints with linearly elastic behavior. In addition, Lemos (1987), Brady et al (1990), Zhao and Cai (2001), Zhao et al (2006b), and Zhao et al (2008) carried out numerical studies on wave transmission across a single joint or a set of parallel joints with nonlinear deformation behavior.…”

Some Fundamental Issues and Verification of 3DEC in Modeling Wave Propagation in Jointed Rock Masses

“…Zhao et al (2008) carried out numerical studies of P wave propagation across multiple non-linearly deformable joints with UDEC. Lei et al (2007) studied 2D compressive wave propagation through a set of parallel joints in rock masses. Zhu et al (2011a) verified the capability of UDEC to model wave transmission across rock joints and performed a numerical study on wave transmission across jointed rock masses with UDEC, where multiple joint sets exist.…”