Abstract: In order to ensure the safety of Shanghai Chenhang reservoir during levee operation, professional testing means are used for dynamic monitoring of underwater terrain. Combination of GPS-RTK technology and echo sounder is adopted. As well, overall topographic survey and the fixed cross section measurement are carried out. Measurement results are reasonably processed and visualized, visually displaying the global and local underwater terrain change on the river side, which provides professional data for safe operation of the levee.

Key words: Chenhang reservoir, safety management, underwater topographic survey, dynamic monitoring

摘要： 为确保上海市陈行水库大堤运行期间的安全，采用水库专业检测手段，在水库大堤面向长江一侧的滩面开展了水下地形动态监测。水下地形动态监测运用GPS-RTK技术结合回声测深仪进行，分别实施了整体地形测量与固定断面测量，并对测量成果进行合理、可视化的处理，直观地表达了大堤临江侧滩面水下地形整体及局部的冲淤变化，为陈行水库大堤的安全运行提供专业检测数据支持，对同类水库安全管理具有借鉴意义。

关键词: 陈行水库, 安全管理, 水下地形, 动态监测