The underwater foundation of aqueduct bears various loads and high water flow for a long time.After a long operation period,the problem of safety detection is becoming increasingly prominent.In view of the technical advantages of three-dimensional(3D)laser scanning sonar system,its system composition,working principle,technical parameters and application ways were introduced,and it was applied to the underwater detail structure detection of an aqueduct foundation.The detection results showed that the sonar system had the advantages of fast imaging speed,clear image and high monitoring efficiency.It could accurately display the underwater detailed 3D structure of the detection aqueduct,and can effectively avoid the defects of divers'exploration safety risk and poor scanning effect of traditional sonar.At the same time,the system can also work in the water environment with high sediment concentration and low visibility,and has good applicability and popularization.
3D laser scanningsonaraqueduct foundationunderwater detection