Abstract: The arch dam of Jinping Ⅰhydropower station is the highest dam in the world. In accordance with the established scheme, the reservoir water level has reached normal high water level now. The monitoring result shows that the stress and strain, deformation, seepage, osmotic pressure of dam are in line with the general law, the value is under the designed value. The behavior of the project is normal on the whole and the reservoir bank is stable. The water level of the 1 880 m has lasted more than 1 month, monitoring data tends to be stable.

Key words: Jinping Ⅰhydropower station, the first impoundment, safety evaluation

摘要： 锦屏一级水电站双曲拱坝是世界已建最高坝，首次蓄水按库水位1 700 m、1 800 m、1 840 m、1 880 m 四阶段已成功蓄至正常蓄水位。监测结果表明大坝变形、应力应变、渗流、渗压符合一般规律，量值在设计控制指标范围以内，枢纽工程各建筑物工作性态整体正常；库岸总体安全；水位在1 880 m 附近持续1 个多月后，各监测数据趋于平稳。

关键词: 锦屏一级水电站, 首次蓄水, 安全评价