Numerical study on detection of heterogeneities in half space

CHAI Hua-you; LU Ying-fa; LI Qi; LIU Ming-gui

English Version Journal Login

您当前的位置：

首页 >

文章列表页 >

Numerical study on detection of heterogeneities in half space

更新时间：2026-06-25

- Numerical study on detection of heterogeneities in half space
- Vol. 28, Issue 1, (2007)
- 作者机构：
  
  1. 中国科学院武汉岩土力学研究所,武汉,430071
  2. 华中科技大学土木工程与力学学院,武汉,430074
- 作者简介：
- 基金信息：
- DOI：
  CLC： TU45
- Online First：28 August 2013，
  
  Published：2007
- 稿件说明：
移动端阅览
CHAI Hua-you, LU Ying-fa, LI Qi, et al. Numerical study on detection of heterogeneities in half space[J]. 2007, 28(1).
DOI：

CHAI Hua-you, LU Ying-fa, LI Qi, et al. Numerical study on detection of heterogeneities in half space[J]. 2007, 28(1). DOI：

摘要

用数值模拟方法研究了地下异质体对波散射

分析了散射波对表面波相速度影响，结果表明：由相速度曲线扰动难以有效确定异质体方位。在表面波场中，散射波能量相对较小，不易辨别，以振源为中心，在测线上对称布置一组测点，通过两侧测点质点响应曲线比较，得到表面散射波场。在表面散射波场中，散射瑞利波是主要的，由散射瑞利波走时随测点位置变化可判断地下异质体的方位。最后，给出地下异质体方位测试方案。

Abstract

The waves scattered by underground heterogeneities are studied by numerical simulation; and effects of the scattered waves on the surface wave velocity are analyzed. The results indicate that the location of a heterogeneity can not be effectively detected from variation of the phase velocity with the receiver position. Because energy of the scattered waves is small in the surface wave field

the scattered waves are not easily distinguished. When the source is taken as the center

and a group of receivers are symmetrically set along a measuring line

the scattered wave field can be obtained by comparing particle responses on two sides. The scattered Rayleigh waves dominate the scattered wave field

the locations of underground heterogeneities can be predicted by variation of traveling time of the scattered Rayleigh waves with the distance between the receiver and the source. Finally

the detection schemes are proposed.

关键词

Keywords

references

Views

1087

下载量

CSCD

Alert me when the article has been cited

提交

Tools

Publicity Resources

Inversion of shallow shear wave velocity profile of engineering site from recordings associated with microtremors array

Approximate approach to analyzing effective velocity of surface waves

Analysis of behaviours of Rayleigh waves by stiffness matrix method

Study on equivalence of dispersion curves in Rayleigh wave method between transient-state and steady-state

Numerical research on road embankment boundary effects on Rayleigh wave exploration

Related Author

LI Guang-ying

SHI Li-jing

TAO Xia-xin

DONG Lian-cheng

BAI Shi-wei

WEI Chang-fu

CHAI Hua-you

LU Ying-fa

Related Institution

Institute of Engineering Mechanics, China Earthquake Administration

College of Architecture and Civil Engineering, Heilongjiang Institute of Science and Technology

School of Civil Engineering, Harbin Institute of Technology

State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil Mechanics, Chinese Academy of Sciences

College of Civil Engineering and Mechanics, Huazhong University of Science and Technology

AI问答

⁰