摘要
该文介绍了在贵州某隧道面波检测中,利用GEODE24野外地震仪采集面波数据,经傅里叶变换在频率-波数域显示多模式(模态)面波能量团,之后手工提取相速度曲线做出速度剖面,并利用遗传算法对多模式表面波联合反演分析异常,发现了低速带,而且在反演模型中的相应位置也发现混凝土层的塌陷脱空。经钻探验证表明异常圈定较准确,效果令人满意。
This paper introduces in the surface wave detecting in a tunnel in Guizhou,the surface wave data is collected by GE0DE24 field seismic instrument,the multi mode（modal） surface wave energy is shown in frequency-wave number domain by Fourier transform. The velocity profile is made by phase velocity curve which is extract by hands. And the genetic algorithm is used to joint inversion to the multi mode surface waves and analyzed the abnormity,the low velocity zone is found,and the corresponding position of the inversion model is also found in the collapse and void area in the concrete layer. Verified by drilling,it shows that the delineated abnormity is more accurate and the effect is satisfactory.
作者
王超
雷宛
陈登亮
李明
陈旭乐
Wang Chao Lei Wan Chen Dengliang Li Ming Chen Xule(School of Geophysical, Chengdu University of Technolog)
出处
《勘察科学技术》
2016年第6期61-64,共4页
Site Investigation Science and Technology
关键词
频散曲线
多道瞬态瑞雷波
多模式面波
曲线反演
dispersion curve
multi-channel transient Rayleigh wave
multi mode surface wave
curve inversion
