In May 2005, a major breakthrough in dam safety monitoring was achieved with the successful development of the TB-1 underwater detection robot by Professor Sun Enfang from Harbin Engineering University. The robot passed the acceptance test conducted by the expert group of the national "863 Program" for robot technology and was officially put into service. This marked a significant advancement in the field of underwater inspection. The TB-1 robot is equipped with high-resolution imaging capabilities that allow it to detect even the smallest cracks on the surface of dams. More importantly, it can identify internal cavities, determine their locations, and quantitatively assess the extent of damage. Its operational depth reaches up to 300 meters, making it suitable for inspecting all types of dams across China—large, medium, and small. Additionally, the robot is capable of detecting vertical structures and complex horizontal formations buried under silt. It performs well in both clear and turbid water environments, a feature that sets it apart from older underwater robots. This versatility makes it an ideal tool for comprehensive dam inspections. Experts praised the TB-1 as the first multi-functional integrated underwater detection robot in China, combining underwater imaging, structural detection, topographic mapping, and internal damage assessment. This innovation represents a major leap forward in dam safety monitoring technology, offering a reliable and efficient solution for maintaining the integrity of critical infrastructure.

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