During the operation of concrete face rockfill dams

seepage caused by factors such as uncoordinated deformation of dam body and material aging may seriously threaten the dam safety. Traditional detection methods such as diver inspection and single geophysical technique detection are limited by their restricted coverage and low reliability

making them inadequate for precise detection in complex underwater environments. This paper proposes a detection system centered on the integration of "acoustic-optical-electrical" multiple technologies. a complete detection technology chain of "monitoring and analysis- wide- area survey- local detailed investigation- precise verification" is constructed. Furthermore

taking a concrete face rockfill dam in Southeast Asia as an example

the applicability and reliability of this technology are verified.