- 责任者：Nie Jianxin (State Key Laboratory of Explosion Science and Technology ; Beijing Institute of Technology ; Beijing 100081 ; China) ; Yang Dinghui
- 刊名：Chinese Journal of Geophysics
- 出版年：2010
- 卷期：53(2)
- 关键词：波频散 ; wave dispersion ; 粘弹性材料 ; viscoelastic materials
- 页码：p.385-392
- 图表：4 illus., 13 refs.
- 分类号：1600
- issnNo：ISSN0001-5733
- isbnNo：CN11-2074/P
In order to describe the effect of the clay content on the viscoelastic mechanism, a correction factor of anisotropic viscoelastic parameters was defined and introduced into our viscoelastic model. At the same time, viscoelastic mechanism and two flow mechanisms of pore fluids (Biot-flow and squirt-flow mechanism) were simultaneously included in a united viscoelastic Biot/squirt (BISQ) model which describes the wave propagating in the porous viscoelastic anisotropic media with the low permeability/porosity and bearing with clay. Numerical results show that the effects of angle of wave propagation, anisotropic permeability and the clay content on wave dispersion and attenuation are obviously anisotropic for wave propagating in complex porous media saturated with fluids. The viscoelastic mechanism is mainly responsible for energy loss of wave propagation in low frequency range (seismic exploration).