In 2000, pile-driving machine was first used in underwater construction in building Nanshi hydrologic station. This paper briefly introduces the process and technological points.

• 摘要应用钻孔桩机建设澜石水文站自记台在水下施工。介绍其水下采用钻孔导管法浇筑混凝土的施工过程及技术要点。