Abstract：On the basis of Chen's equation of finite deformation mechanics with a dragging coordina for system,the paper studied the meaning of elastic parameters and constitutive equation in the medium equivalent to classic infinitesimal deformation mechanics that cracked,large-deformation formation corresponds to and relevant features of seismic velocity.For the purpose of fault interpretation in seismic exploration,the paper provided a basis of mechanical theory for interpreting fault(fractured zone)in the basis of anisotropy,which is of applied value to speed up the development of 3-D,3-C seismic exploration technique.
