Stochastic seismic wave interaction with a rock joint having Coulomb-slip behavior  

作　　者：Jianchun Li Haibo Li Guowei Ma 

机构地区：[1]State Key Laboratory of Geomechanics and Geotechnical Engineering,Institute of Rock and Soil Mechanics,Chinese Academy of Sciences,Wuhan,430071,China [2]School of Civil and Resource Engineering,University of Western Australia,Crawley,6009,Australia

出　　处：《Journal of Rock Mechanics and Geotechnical Engineering》2010年第4期321-330,共10页岩石力学与岩土工程学报(英文版)

基　　金：Supported by the National Natural Science Foundation of China (11072257, 51025935, 40872188);the Key Projects in the National Sciences and Technology Pillar Program (2008DAB29B00)

摘　　要：Seismic wave interaction with a slippery rock joint with an arbitrary impinging angle is analytically studied based on the conservation of momentum on the wave fronts. Based on the displacement discontinuity method, the wave propagation equations are derived for incident P- and S-waves. By comparison, the calculated transmission and reflection coefficients for normal incident waves are the same as the existing results, which proves the wave propagation equation obtained in the paper is correct. The wave propagation derived in the context can be applied to incident waves with different waveforms. Stochastic seismic waves are then used to analyze the seismic wave interaction with the slippery rock joint, where the stochastic seismic waves are generated from frequency spectra. The parametric studies are carried out to investigate the effect of type, intensity and impinging angle of the incident seismic waves on the wave propagation across the slippery rock joint.Seismic wave interaction with a slippery rock joint with an arbitrary impinging angle is analytically studied based on the conservation of momentum on the wave fronts. Based on the displacement discontinuity method, the wave propagation equations are derived for incident P- and S-waves. By comparison, the calculated transmission and reflection coefficients for normal incident waves are the same as the existing results, which proves the wave propagation equation obtained in the paper is correct. The wave propagation derived in the context can be applied to incident waves with different waveforms. Stochastic seismic waves are then used to analyze the seismic wave interaction with the slippery rock joint, where the stochastic seismic waves are generated from frequency spectra. The parametric studies are carried out to investigate the effect of type, intensity and impinging angle of the incident seismic waves on the wave propagation across the slippery rock joint.

关 键 词：stochastic seismic wave slippery rock joint wave propagation wave fronts conservation of momentum 

分 类 号：P315.31[天文地球—地震学]