摘要
从工程实践出发,采用粘弹性两相介质模型,详细研究了地震波在准饱水岩层中的传播问题。由于此模型不但考虑了岩层骨架的粘性,而且考虑了饱和度对地震波传播的影响,从而可以全面地了解地震波在准饱水岩层中的传播特性。该模型比以往研究地震波的模型更具合理性。采用数值算例对饱和度、频率、含水量对地震波的波速和衰减系数的影响进行了细致的分析,并得出了一些重要的结论。
Considering engineering practice, seismic wave propagation in nearly saturated rock is studied by using the viscoelastic two-phase model. This model can consider the effect of the viscosity of rock skeleton and saturation degree on the propagation of the seismic wave. The propagation characteristics of seismic wave in nearly saturated rock can be understood comprehensively and the model is more reasonable than other models for study of seismic wave propagation. The effect of saturation degree, frequency, water content on the wave velocity and attenuation coefficient are studied by numerical examples; and some valuable conclusions are given.
出处
《岩石力学与工程学报》
EI
CAS
CSCD
北大核心
2005年第14期2490-2496,共7页
Chinese Journal of Rock Mechanics and Engineering
关键词
岩石力学
粘弹性
地震波
准饱水岩层
Numerical analysis
Seismic waves
Viscoelasticity
Wave propagation
