Propagation of Love-Type Wave in an Imperfectly Bonded Double-Porous Composite Rock Structure Impacted by Liquid Loading

Abstract

Construction of a large water reservoir can trigger an earthquake. The event of the earthquake can lead to the propagation of a destructive Love-type waves (LT-wave). Therefore, the area near the reservoir is prone to the propagation of LT-waves. Due to this, it is crucial to examine the propagation of LT-wave propagation in the geological structure found in these areas. The present analysis adduces the propagation of LT-waves in the anisotropic double-porous rock structure that is generally found the area of water reservoirs. The said rock structure consists of three different regions: the uppermost viscous liquid region, transversely isotropic double-porous (TIDP) rock layer in the middle, and the lowermost half-space region comprised of isotropic double-porous (IDP) rock medium. The expressions for the dispersion and damping characteristics have been derived for parabolicalal and rectangular interfacial irregularity. The profound efficacy of distinct physical parameters, such as irregularity parameter, interfacial bonding parameter, porosity parameter of said middle double-porous layer, and porosity parameter of said lowermost double-porous half-space on the phase velocity and attenuation coefficient of LT-waves, are also discussed.