三峡地下电站尾水阻尼井混凝土施工技术

Concrete Construction Technology of Tailwater Damping Well for Three Gorges Underground Power Plant

三峡地下电站尾水阻尼井具有施工环境小、安全隐患大、施工工期紧、过流面质量要求高等特点。经研究,确定采用先在阻尼井底部浇筑基础混凝土形成牛腿井圈结构,然后在井圈上使用液压滑模连续浇筑成形的方案。衬砌混凝土施工完毕后,阻尼井井壁平滑,成形质量高,得到了监理和业主单位的认可。

The tailwater damping well for the Three Gorges underground power plant is built in narrow space with high safety risk. Its construction period is short and the quality requirement of its overflow surface is high. On the basis of the study, we determined to build a circle corbel structure which was a base concrete at the bottom of the damping well, then to use the hydraulic slip-form on base concrete to construct the whole damping well. After the lining concrete construction was finished, the wall of damping well is smooth and its quality is high, which has accepted by the Supervisor and the Owner.