Propagation characteristics of elastic wave in saturated frozen soil

ZHOU Feng-xi; LAI Yuan-ming

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Propagation characteristics of elastic wave in saturated frozen soil

更新时间：2026-06-25

- Propagation characteristics of elastic wave in saturated frozen soil
- Vol. 32, Issue 9, (2011)
- 作者机构：
  
  1. 中国科学院寒区旱区环境与工程研究所,兰州,730000
  2. 兰州理工大学土木工程学院,兰州,730050
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU43
- Online First：13 September 2011，
  
  Published：2011
- 稿件说明：
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ZHOU Feng-xi, LAI Yuan-ming. Propagation characteristics of elastic wave in saturated frozen soil[J]. 2011, 32(9).
DOI：

ZHOU Feng-xi, LAI Yuan-ming. Propagation characteristics of elastic wave in saturated frozen soil[J]. 2011, 32(9). DOI：

摘要

用混合物连续介质理论，考虑了土颗粒骨架、冰、水三相介质，选取土颗粒位移、孔隙水位移、孔隙水压和孔隙冰压为基本变量，采用Bishop有效应力原理，建立了饱和冻土多孔介质的弹性波弥散方程。经理论推导，给出了饱和冻土中弹性波的传播速度及衰减的解析表达式。通过数值算例，探讨了饱和冻土中两种压缩波（Pl波和P2波）及剪切波（S波）的波速和衰减与频率和孔隙率、含冰量等土参数的关系。通过参数分析研究了饱和冻土中3种体波的传播特性。

Abstract

With the application of continuum theory of mixture

which takes the three-phase media

including grains

fluid and ice into account

the dispersion equations of body waves are established for saturated frozen soil by considering Bishop’s effective stress formula. The equations are described with skeleton displacement

pore water displacement

pore water pressure and pore ice pressure. The analytical expressions of wave velocity and attenuation are deduced. The effects of frequency and the parameters of saturated frozen soils on the velocity and attenuation of three kinds of body waves (P1 wave

P2 wave and S wave

respectively) are investigated by using numerical method

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