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作者:

Fan, L. F. (Fan, L. F..) | Jiang, F. (Jiang, F..) | Wang, M. (Wang, M..) | Chen, S. (Chen, S..)

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EI Scopus SCIE

摘要:

This paper studies the propagation of oblique incident seismic P waves as they pass through joints containing saturated fluids with different media on both sides. For joints containing saturated fluids, the viscoelastic model is used to study the dynamic deformation characteristics. The complete solution for seismic P waves propagating through joints is derived. The reflection and transmission coefficients that occur at arbitrary angles for different ratios of wave impedance are studied. The effects of the frequency, viscosity coefficient and ratio of wave impedance on the reflection and transmission coefficients are discussed. The results show that the reflection and transmission coefficients vary continuously as the angle increases when the ratio of wave impedance is <1.00. However, when the ratio of wave impedance is >1.00, the reflection coefficients are continuous, but the transmission coefficients are discontinuous. When the viscosity of the joint is not considered, as the frequency of the incident wave increases, the reflection coefficients of the reflected P wave and SV wave increase, the transmission coefficient of the transmitted P wave decreases, and the transmission coefficient of the transmitted SV wave first increases and then decreases. When the viscosity of the joint is considered, the difference between the reflection and transmission coefficients under different viscosity coefficients decreases as the frequency increases. Moreover, with increasing values of the viscosity coefficient, the reflection and transmission coefficients are closer to those values that viscosity is not considered. The results also show that the reflection coefficients are continuous, while the transmission coefficients are discontinuous as the ratio of wave impedance increases.

关键词:

P wave Transmission Joint containing saturated fluid Different media Reflection

作者机构:

  • [ 1 ] [Fan, L. F.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 2 ] [Jiang, F.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 3 ] [Chen, S.]Beijing Univ Technol, Coll Architecture & Civil Engn, Beijing 100124, Peoples R China
  • [ 4 ] [Wang, M.]Shijiazhuang Tiedao Univ, Sch Civil Engn, Shijiazhuang 050043, Peoples R China

通讯作者信息:

  • [Wang, M.]Shijiazhuang Tiedao Univ, Sch Civil Engn, Shijiazhuang 050043, Peoples R China

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来源 :

JOURNAL OF APPLIED GEOPHYSICS

ISSN: 0926-9851

年份: 2024

卷: 222

2 . 0 0 0

JCR@2022

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