PROPAGATION LAW OF OBLIQUE INCIDENCE OF STRESS WAVE ACROSS A VISCOELASTIC JOINT
LIU Libo，LI Jianchun，LI Haibo，LIU Tingting
(State Key Laboratory of Geomechanics and Geotechnical Engineering，Institute of Rock and Soil Mechanics，
Chinese Academy of Sciences，Wuhan，Hubei 430071，China)
Abstract：The study of stress wave propagation in rock mass is an important topic in rock mechanics. Based on the assumption of displacement and stress discontinuity，for the visco-elastic behavior of filled joint，the transmission and reflection coefficient equations of P-wave and S-wave in the frequency domain are respectively derived. By numerical calculation and parameter analysis，the impact of parameters on the law of stress wave propagation is studied，such as the incident angle，the incident wave frequency and joint stiffness. Reasonable parameters selections of incident wave and filled joint have significant effects on the determination of transmission and reflection coefficient.
刘立波，李建春，李海波，刘婷婷. 应力波斜入射黏弹性节理的传播规律[J]. 岩石力学与工程学报, 2012, 31(s2): 3593-3598.
LIU Libo，LI Jianchun，LI Haibo，LIU Tingting. PROPAGATION LAW OF OBLIQUE INCIDENCE OF STRESS WAVE ACROSS A VISCOELASTIC JOINT. , 2012, 31(s2): 3593-3598.
[1] 王礼立. 应力波基础[M]. 北京：国防工业出版社，2010：307–318.(WANG Lili. Foundation of stress wave[M]. Beijing：National Defense Industry Press，2010：307–318.(in Chinese))
[2] PYRAK-NOLTE L J，MYER L R，COOK N G W. Anisotropy in seismic velocities and amplitudes from multiple parallel fractures[J]. Journal of Geophysical Research，1990，95(B7)：11 345–11 358.
[3] COOK N G W. Natural joint in rock：mechanical，hydraulic and seismic behaviour and properties under normal stress[J]. International Journal of Rock Mechanics and Mining Sciences and Geomechanics Abstracts，1992，29(3)：198–223.
[4] CAI J G，ZHAO J. Effects of multiple parallel fractures on apparent attenuation of stress waves in rock masses[J]. International Journal of Rock Mechanics and Mining Sciences，2000，37(4)：661–682.
[5] ZHAO X B，ZHAO J，CAI J G. P-wave transmission across fractures with nonlinear deformational behaviour[J]. International Journal for Numerical and Analytical Methods in Geomechanics，2006，30(11)：1 097–1 112.
[6] LI J C，MA G W，ZHAO J. An equivalent viscoelastic model for rock mass with parallel joints[J]. Journal of Geophysical Research，2010，115：B03305
[7] LI J C，LI H B，MA G W，et al. A time-domain recursive method to analyse transient wave propagation across rock joints[J]. Geophysical Journal International，2012，188(2)：631–644.
[8] SCHOENBERG M. Elastic wave behavior across linear slip interfaces[J]. Journal of the Acoustical Society of America，1980，68(5)：1516–1521.
[9] ZHU J B，PERINO A，ZHAO G F，et al. Seismic response of a single and a set of filled joints of viscoelastic deformational behaviour[J]. Geophysical Journal International，2011，186(3)：1 315–1 330.
[10] ZHAO J，CAI J G，ZHAO XB，et al. Dynamic model of fracture normal behavior and application to prediction of stress wave attenuation across fractures[J]. Rock Mechanics and Rock Engineering，2008，41(5)：671–693.
[11] JAFARI M K，PELLET F，BOULON M，et al. Experimental study of mechanical behaviour of rock joints under cyclic loading[J]. Rock Mechanics and Rock Engineering，2004，37(1)：3–23.
2012, Vol. 31 
