浅部地下洞穴散射瑞利波对表观相速度影响

柯文汇; 柴华友; 王亚军; 黄祥国; 李忠超

doi:10.13409/j.cnki.jdpme.2019.05.010

您当前的位置：

首页 >

文章列表页 >

浅部地下洞穴散射瑞利波对表观相速度影响

论文 | 更新时间：2025-12-11

- 浅部地下洞穴散射瑞利波对表观相速度影响
- Effects of Rayleigh Waves Scattered at Shallow Cavities on Apparent Phase Velocity
- 防灾减灾工程学报 2019年39卷第5期页码：771-777
- 作者机构：
- 作者简介：
- 基金信息：
  
  国家自然科学基金面上项目（41474113）;武汉工程大学人才专项经费资助项目;湖北省建设科技计划项目（2016）资助
- DOI：10.13409/j.cnki.jdpme.2019.05.010
  中图分类号： 631.4
- 纸质出版：2019
- 稿件说明：
移动端阅览
[1]柯文汇,柴华友,王亚军,黄祥国,李忠超.浅部地下洞穴散射瑞利波对表观相速度影响[J].防灾减灾工程学报,2019,39(05):771-777.

柯文汇, 柴华友, 王亚军, et al. Effects of Rayleigh Waves Scattered at Shallow Cavities on Apparent Phase Velocity[J]. 2019, 39(5): 771-777.
[1]柯文汇,柴华友,王亚军,黄祥国,李忠超.浅部地下洞穴散射瑞利波对表观相速度影响[J].防灾减灾工程学报,2019,39(05):771-777. DOI： 10.13409/j.cnki.jdpme.2019.05.010.

柯文汇, 柴华友, 王亚军, et al. Effects of Rayleigh Waves Scattered at Shallow Cavities on Apparent Phase Velocity[J]. 2019, 39(5): 771-777. DOI： 10.13409/j.cnki.jdpme.2019.05.010.

摘要

均匀半无限体中表面源激发的瑞利波能量在介质浅部占主导地位。当前行瑞利波遇浅部洞穴时

瑞利波在洞穴发生散射。以洞穴作参照位置

波场沿前行波方向可依次分为前方、上方、后方三个区域。前方远场散射波以反射瑞利波为主

传播特性与入射波相同;当洞穴几何参数满足一定条件

上方散射波可形成与兰姆波传播特性类似的导波;后方远场由透射瑞利波主导。受散射波影响

表面波场表观相速度出现扰动

不同位置扰动特征不同

若测线下方有浅部洞穴存在

由不同位置相速度扰动特征差异

可预测洞穴方位

由前方相速度特征扰动对应波长可预测洞穴埋深。

Abstract

In a homogenous half space acted by surface sources

the shallow wave-fields are dominated by Rayleigh waves.When the forward Rayleigh waves encounter a shallow cavity

the waves are scattered at the cavity.Taking the cavity as the reference position

the wave-field can be divided into the front

above and rear regions in sequence along the forward direction.The scattered waves in the far field of the front region are dominated by the reflected Rayleigh waves

which travel at a velocity the same as that of the forward Rayleigh waves.The guided waves with apropagation behavior similar to Lamb waves may be formed at certain geometrical sizes of the cavity.The far field of the rear region is controlled by the transmitted Rayleigh waves.Influenced by the scattered waves

the apparent phase velocity curves of surface waves are disturbed.The characteristics of the disturbances differ at different positions.If the shallow cavity is present under the measuring line

the cavity can be localized from the disturbance differences along the line.The buried depth of the cavity can be estimated from the wavelength corresponding to the characteristic disturbance of the phase velocity in the front region.

关键词

Keywords

references

层状地基中表面波有效相速度 [J]. 柴华友,张电吉,韦昌富,卢应发. 岩土工程学报 . 2009(06)

半无限介质内异质体方位探测数值研究 [J]. 柴华友,卢应发,李祺,刘明贵. 岩土力学 . 2007(01)

地下洞穴对表面波表观相速度影响的数值分析 [J]. 柴华友,崔玉军,卢应发,刘明贵. 岩石力学与工程学报 . 2006(05)

表面波谱分析影响因素研究 [J]. 柴华友,卢应发,刘明贵,李祺. 岩土力学 . 2004(03)

稳态瑞雷波实测洞穴D─R曲线的类型 [J]. 夏宇靖. 煤田地质与勘探 . 1996(01)

Spatial behaviour of Rayleigh waves in layered half‐spaces under active surface sources [J] . Hua‐You Chai,Tian‐Bin Li,Kok‐Kwang Phoon,Elton J. Chen,Dian‐Ji Zhang. Geophysical Prospecting . 2017 (4)

Some theoretical and numerical observations on scattering of Rayleigh waves in media containing shallow rectangular cavities [J] . Hua-You Chai,Kok-Kwang Phoon,Siang-Huat Goh,Chang-Fu Wei. Journal of Applied Geophysics . 2012

A parametric study of effective phase velocity of surface waves in layered media [J] . Hua-You Chai,Yu-Jun Cui,Chang-Fu Wei. Computers and Geotechnics . 2012

Experimental and numerical analysis of MASW tests for detection of buried timber trestles [J] . F. Tallavó,G. Cascante,M. Pandey. Soil Dynamics and Earthquake Engineering . 2008 (1)

Feasibility of detecting near-surface feature with Rayleigh-wave diffraction [J] . Jianghai Xia,Jonathan E. Nyquist,Yixian Xu,Mary J.S. Roth,Richard D. Miller. Journal of Applied Geophysics . 2006 (3)

Effects of underground cavities on Rayleigh waves—Field and numerical experiments [J] . A. Nasseri-Moghaddam,G. Cascante,C. Phillips,D.J. Hutchinson. Soil Dynamics and Earthquake Engineering . 2006 (4)

The potential of seismic methods for detecting cavities and buried objects: experimentation at a test site [J] . Gilles Grandjean,Donatienne Leparoux. Journal of Applied Geophysics . 2004 (2)

Detection of Underground Obstacles by SASW Method—Numerical Aspects [J] . Vahid Ganji. Journal of Geotechnical and Geoenvironmental Engi . 1997 (3)

Effects of obstacles on Rayleigh wave dispersion obtained from the SASW test [J] . N. Gucunski,V. Ganji,M.H. Maher. Soil Dynamics and Earthquake Engineering . 1996 (4)

浏览量

下载量

CSCD

文章被引用时，请邮件提醒。

提交

工具集

关联资源

暂无数据