Abstract: During the underwater inspection of Jiemian hydropower station, an obvious leakage defect was found at the connection between dam face slab and right guide wall of spillway. The ink trace showed that there was obvious leakage with certain absorption capacity. After analyzing and studying the monitoring data, the reservoir water level was lowered to recheck the dam face slab. Based on the inspection results, corresponding repair scheme was formulated, and good repair effect was obtained, worth reference for similar projects.

Key words: underwater inspection, face slab, leakage, defect treatment

摘要： 水下检查时发现街面水电站大坝面板与溢洪道右导墙连接部位有一处明显渗漏缺陷，墨汁示踪表明缺陷存在明显渗漏，且具有一定的吸附力。分析研究监测资料后，降低水库水位对大坝面板进行复查。针对检查结果制定了相应的修复方案，取得了良好的修复效果，供类似工程借鉴参考。

关键词: 水下检查, 面板, 渗漏, 缺陷处理