中文摘要：

目前,国内外对面波的频散特性以及声电效应的研究都比较成熟,但是将声电效应应用于面波的频散特性研究当中并不多见.本文介绍了声电效应的物理基础,以及利用声电效应进行面波频散特性物理模拟的可行性研究.基于人工均匀半空间物理模型和同一虚拟仪器技术观测平台,首先采用声声观测方法进行有机玻璃模型实验,然后分别采用声声和声电观测方法对同一冻砂模型进行了多道面波试验,并采集面波信号.应用时域和频域分析技术对所采集信号进行处理,分别得到各模型试验中的面波频散特性曲线.通过相同试验条件下的声声与声电试验结果进行对比分析,验证了声电效应在面波频散特性物理模拟中应用的可行性,以及其相对于传统的超声实验方法所具有的优越性.试验结果表明,与超声实验的信号相比,声电实验信号的频谱有明显拓宽,使面波的勘探深度范围有显著增大,其原因是采集声电信号所用的点电极具有宽带的特征,受固有频率的限制小.此外,由于声电效应试验中采用点电极直径一般为2~3 mm,其尺寸远小于超声换能器（直径约3cm）,极大克服了声声试验中由于大尺度换能器带来的诸多方面的困难,可以增强瑞利面波频散特性物理模拟研究的试验观测精度.

英文摘要：

Although the theories and practices of the both seismoelectric conversion effect and velocity dispersion of Rayleigh surface waves have been well developed, the application research of seismoelectric conversion effect to the experimental study of Rayleigh surface wave is rarely dealed with by researchers,up to now.This paper first introduces the mechanism of seismoelectric effect and its potencial to the experiment measurement of Rayleihgh surface waves.Then,for two homogeneous half-space models consisted of frozen sand and Lucite,the laboratory observations of multi-channel Rayleigh surface waves are conducted by both acoustic-acoustic and acoustic-electric methods,respectively,and the velocity dispersion curves of Rayleigh surface waves are extracted by a frequency-wave number（f-k）transform.The results show that,similarly to the velocity dispersion curves extracted from the acoustic-acoustic observation data,that from acousticelectric ones reveal the typical homogeneous half-space dispersion features,that is,there is little velocity dispersion and the velocities within the excited frequency band are all very approximated to the theory surfave waves of the models,which verify the application feasibility of seismoelectric effect to the experiment observation of Rayleigh surface waves.Moreover,the experimental results show that the frequency spectrum of acoustic-electric conversions signal is much broader than that of of acoustic-acoustic signal,which means the detection depth of the surface waves measured by the latter can increased significantly,since the receive electrode with little inherent frequency limitation has a wide frequency band.In addition,as the diameter of each electrode used in the acoustic-electric observation is generally in 2~3 mm and is much smaller than that of ultrasound transducer in about 2~3cm,the acousticelectric method can greatly enhance the observation precision in the experiment of Rayleigh surface waves.