探地雷达和浅层地震波法在海堤抛石层探测中的应用

介绍探地雷达、瑞雷波法和地震映像法的基本原理及特点,针对海堤抛石断面结构分层及其物性特征,以浙江东部某海堤为例,综合运用探地雷达、瑞雷波法和地震映像法,高效、可靠、准确地探明了抛石层的分布范围及深度。探测实践表明,探地雷达具有快速、连续和整体性的优势,瑞雷波法具有较强的纵向分辨能力,地震映像法具有较强的横向分辨能力,这3种方法分别从浅层人工地震波场和电磁场方面反映探测对象和目标,起到了较好的互补和综合作用。

Application of ground-penetrating radar and shallow seismic wave method to detection of riprap layer in sea dike

The basic principles and characteristics of the ground-penetrating radar method,the Rayleigh wave method and the seismic imaging method are described.With a sea dike in eastern Zhejiang Province as an example,the three methods are comprehensively applied to detect the range and depth of the riprap layer.The detection results show that the round penetrating radar method possesses advantages such as high speed,continuous detection and convenient operation;and that the Rayleigh wave method has a high vertical resolution while the seismic imaging method has a high transversal resolution.These three methods play a good integrated and supplementary role in the detection of buried targets,from the aspect of the shallow seismic wave field and the electromagnetic field.