Abstract: Due to concrete aging, steel bar corrosion, earthquakes, artificial influence, biological damage or other factors, defects or diseases would occur in concrete dam during long-term operation. As the concealment of dam defects or diseases, dam safety detection is an important method to detect and identify the defects and defects, which provides an important basis for evaluating the safety state of dam and reinforcement. The development of new technology of concrete dam detection is of great significance to improve the level of dam safety detection technology.

Key words: concrete dam, safety detection, technical progress

摘要： 混凝土坝建成后，在长期运行过程中，由于坝体混凝土老化、钢筋锈蚀，或因地震、人为活动、生物破坏等将产生缺陷或病害，由于大坝的缺陷、病害具有一定的隐蔽性，大坝安全检测是发现和查明大坝缺陷、病害的重要手段，检测成果也是评价大坝的安全性态和补强加固处理的重要依据。混凝土坝检测新技术的发展对于提高大坝安全检测技术水平具有重要的意义。

关键词: 混凝土坝, 安全检测, 技术进展