含裂隙双相各向异性介质中的地震波传播

THE PROPAGATION OF SEISMIC WAVES IN CRACKED TWO-PHASE ANISOTROPIC MEDIUM

摘要:

基于各向异性介质和含裂隙双相介质中的地震波传播理论,导出了具有四阶对称轴的含裂隙双相各向异性介质的本构关系与波传播的运动方程.指出在含裂隙双相各向异性介质中可能传播6种类型的准纵横波,即快纵波QP₁,慢纵波QP₂,两个分裂的快横波QSV₁,QSH₁和两个分裂的慢横波QSV₂,QSH₂.并以平面波传播为例作了进一步分析.

Abstract:

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:QP₁(quick longitudinal wave), QP₂(slow longitudinal wave), QSV₁,QSH₁(two splitting quick shear waves) and QSV₂,QSH₂(two splitting slow shear waves). As an example, the propagation of plane waves was analyzed further.