THE PROPAGATION OF SEISMIC WAVES IN CRACKED TWO PHASE ANISOTROPIC MEDIUM
FENG Deyi NIE Yongan (Seismological Bureau of Tianjin City,Tianjin 300201)
Based on the propagation theories of seismic waves in the anisotropic medium and in the cracked two phase medium separately, the constitutive relations and dynamic equations of the propagation of seismic waves in cracked two phase anisotropic medium with symmetric axis of 4 rank have been derived. It was pointed that 6 types of quasi longitudinal and quasi shear waves may propagate in the cracked two phase anisotropic medium. They are:QP 1(quick longitudinal wave), QP 2(slow longitudinal wave), QSV 1,QSH 1(two splitting quick shear waves) and QSV 2,QSH 2(two splitting slow shear waves). As an example, the propagation of plane waves was analyzed further.