关键词: 遥田水电站, 水下施工, 闸墩开槽, 水下混凝土切割拆除

Abstract: The overflow section of Yaotian hydropower station is equipped with 27 overflow weirs, and an emergency overhaul gate is added in front of each radial gate. It is the first project to build a new gate slot by underwater construction. In the project, divers complete underwater construction. In the scheme, no need to set up cofferdam to create dry land condition, on restriction by reservoir operation conditions, and no need to diversion or abandon reservoir water. While saving the construction period, the project cost is also greatly reduced. In this paper, the technical difficulties of pier slotting, underwater concrete cutting and removing are discussed.

Key words: Yaotian hydropower station, underwater construction, pier slotting, underwater concrete cutting and removing