The applications of both ground penetrating radar (GPR) and transient Rayleigh waves techniques were introduced in blasting compaction of ore terminal project in Jiaonan bay. Considered the geological structure and special detection conditions of seawall, a 25MHz GPR antenna was chosen to ensure the adequate penetrating depth, and a field test was carried out to obtain exact propagation velocity of electromagnetic waves in different layers. In transient Rayleigh wave detection, the GeopenRWA software which contains an effective inversion scheme was used to process the data. The result of two methods showed good agreement for determining the thickness of riprap layer, and therefore, has potential for quality control of seawall construction and accurate calculation of earthwork volume.
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