瑞雷波的频散特性是瑞雷波勘探工作的直接目标。根据瑞雷波在传播媒体中的速度以及与以波长为单位的转换深度给绘制频散曲线，由频散曲线拐点求取传播媒体物性界面的深度，再由频散曲线各段的速度变化梯度求取传播媒体中各层的瑞雷波层速度，并用统计规律换算各层的横波速度，进而完成各种工程目的的工程地质参数计算。介绍了大亚湾填海工程中工程地质勘测及高速公路勘测中瞬态瑞雷勘测实例，证实了瞬态瑞雷波法的实用性。 The dispersion characteristics of Rayleigh waves are the direct targets of Rayleigh wave exploration. According to the speed of Rayleigh wave in the media and the wavelength conversion as a unit to draw the dispersion curve, the inflection point of the dispersion curve is used to get the depth of the physical interface of the media, and then the velocity gradient of each segment of the dispersion curve Calculate the Rayleigh wave velocities of all layers in the media and calculate the shear wave velocities of each layer by using the statistical law, so as to calculate the engineering geological parameters of various engineering purposes. An example of transient Rayleigh survey in engineering geological survey and expressway survey in Daya Bay reclamation project is introduced, which confirms the practicability of transient Rayleigh wave method.