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Application of piezoelectric ceramic acoustic sensor in detecting engineering properties of deep-sea sediments

The traditional piezoelectric ceramic acoustic sensor was improved and applied to in-situ detecting the engineering properties of sediments in the continental slope of the South China Sea successfully. The relationships between the acoustic velocity and engineering geological characteristics of the sediments were analyzed. Furthermore, acoustic velocity by measurement in situ was compared with the data obtained by the single parameter empirical formula using its density and porosity. The results showed the reliability of this kind of sensors.