Parametric studies of body waves propagation in saturated frozen soil

QIU Hao-miao; XIA Tang-dai; ZHENG Qing-qing; ZHOU Fei

doi:10.16285/j.rsm.2017.0340

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Parametric studies of body waves propagation in saturated frozen soil

更新时间：2026-06-25

- Parametric studies of body waves propagation in saturated frozen soil
- Vol. 39, Issue 11, Pages: 4053-4062(2018)
- 作者机构：
  
  1. 浙江大学滨海和城市岩土工程研究中心,浙江,杭州,310058
  2. 浙江大学软弱土与环境土工教育部重点实验室,浙江,杭州,310058
- 作者简介：
- 基金信息：
- DOI：10.16285/j.rsm.2017.0340
  CLC： TD435
- Online First：15 November 2018，
  
  Published：2018
- 稿件说明：
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QIU Hao-miao, XIA Tang-dai, ZHENG Qing-qing, et al. Parametric studies of body waves propagation in saturated frozen soil[J]. 2018, 39(11): 4053-4062.
DOI：

QIU Hao-miao, XIA Tang-dai, ZHENG Qing-qing, et al. Parametric studies of body waves propagation in saturated frozen soil[J]. 2018, 39(11): 4053-4062. DOI： 10.16285/j.rsm.2017.0340.

摘要

基于Leclaire对饱和双相孔隙弹性介质Biot模型的扩展，研究含有两种不同固相组分的三相多孔弹性介质中体波的传播特性。以饱和冻土为例，分析了各相体积分数、颗粒形状，接触参数等因素对波动方程中惯性参数、黏性参数、刚度参数的影响；对该三相介质模型进行了退化，分析了孔隙中只含液态水或固态冰时体波的特性；以饱和冻土为例，通过数值计算，探讨了饱和冻土中体波的相速度和衰减系数与胶结参数、接触参数、频率、饱和度、孔隙率等参数的关系。结果表明：与一般的饱和土不同，饱和冻土中存在5种体波，即3种纵波和2种横波；5种体波均具有弥散性和衰减性，且P1波、S1波弥散性和衰减性远小于P2、P3、S2波；胶结参数、饱和度、孔隙率对5种体波的传播特性影响显著，接触参数对传播特性影响较小。

Abstract

Based on Leclaire’s extension of the Biot model for saturated porous elastic medium

the propagation characteristics of the body waves in a three-phase porous elastic medium with two types of solid phase components are studied. Firstly

based on the Helmholtz decomposition of the displacement vector

the characteristic equations of the body waves in saturated frozen soil are established. Then the effects of the volume fraction of each phase

the shape of the particles and the contact between the particles on the inertial parameters

viscous parameters and elastic parameters are studied. The model of saturated frozen soil is degraded. The characteristic equations and propagation characteristics of body waves are analyzed assuming only liquid water or ice in pores. Finally

a numerical calculation is carried out to explore the relationship among phase velocity

attenuation coefficient of waves and parameters of soil consolidation

saturation

porosity

particle contact

wave frequency etc. The calculation results show that

different from saturated soil

there are 5 types of body waves in saturated frozen soil

i.e. 3 compressional waves and 2 shear waves. All body waves present dispersion and attenuation. The dispersion and attenuation of P1 wave and S1 wave are much smaller than those of P2

P3 and S2 waves. Body wave propagations are significantly affected by cementation parameters

saturation and porosity

but are slightly affected by contact parameters.

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Related Institution

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Key Laboratory of Soft Soils and Geoenvironmental Engineering of Ministry of Education, Zhejiang University

State Key Laboratory of Architecture Science and Technology in West China, Xi’an University of Architecture and Technology

Key Laboratory of Mountain Hazards and Earth Surface Processes, Institute of Mountain Hazards and Environment, CAS

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