瑞利波测试技术用于剪切波速勘探之研究

STUDY ON THE APPLICATION OF TESTING METHOD OF RAYLEIGH WAVE TO SHEAR WAVE VELOCITY SURVEY IN SHALLOW STRATUM

本文根据瑞利波测量所得波形的变化特征，分析研究了地基参数对瑞利波弥散曲线的影响规律，提出了利用瑞利波测试剪切波速的方法。在研究过程中，对瑞利波测试技术进行了探讨，并引入了相关分析原理，以消除噪声、系统的非线性以及其它一些人为因素的干扰。最后结合实例，论证该技术用于实际勘探的可行性并指出其存在的问题和有待进一步完善的工作。

Rayleingh waves,which usually represent the most energetic part of vibrations generated during civil engineering working, are very sensitive to soil conditions.According to the shapes of Rayleigh waves from synthetic seismograms,this paper analyses the effects of soil parameters on the dispersion curve of Rayleigh wave and presents the method for testing shear wave velocity by Rayleigh wave, in which the testing technique Rayleigh wave is investigated and the disturbances of noise,non-linearity of system and the other man-made factors are removed using correlation analysis theory. In the end,combining the examples,the authots demonstrate the feasibility of the above mentioned method in seismic survey and point out some problems which should be further improved.