Abstract: Water retaining cofferdam all the year and open channel on the left bank is selected for diversion of Longkaikou hydropower station. By combination of open channel with the water retaining dam section on left bank, water would be discharged from the bottom outlet of open channel and the upper notch.

Key words: diversion channel, construction diversion, diversion bottom outlet, notch, Longkaikou hydropower station

摘要： 龙开口水电站采用全年挡水围堰、左岸明渠的导流方案。导流明渠与左岸挡水坝段结合设置，导流明渠底孔和上部缺口联合过流。

关键词: 导流明渠, 施工导流, 导流底孔, 缺口, 龙开口水电站