Abstract: Kongtou hydropower station is a medium sized run-of-river hydropower station with low water head. After underwater inspection, it was found that there were many defects in the underside concrete of water stop steel plate at the bottom of the bulkhead gate slot. According to the design plan and the actual situation of the site, the reinforcement technology of underwater epoxy concrete have been adopted, and good results have been obtained, which could provide reference for similar projects.

Key words: gate slot, underwater, reinforcement

摘要： 孔头电站为低水头河床式中型水电站，经过水下检查发现检修门槽底部止水钢板底面混凝土处存在多处缺陷。根据设计方案及现场实际情况，采用水下环氧混凝土浇筑补强加固处理技术，最终取得了良好效果，可为类似工程补强加固提供参考。

关键词: 门槽, 水下, 补强加固