三峡工程泄洪坝段深孔封顶施工技术

Crown Sealing of Lower-Level Outlets at Spillway Section

三峡工程泄洪坝段深孔是重要的永久性泄水通道 ,其表面施工工艺要求极其严格 ,从模板、钢筋、混凝土下料、振捣等各个施工环节进行了研究分析和探讨 ,总结出了一套提高深孔封顶质量的有效方法。

The lower-level outlets at the spillway section of the Three Gorges project are the major permanent discharging structure, with many stern construction requirements. Based on analyzing on the construction links such as formwork, steel bars, concreting, and vibration, an effective method for improving the quality of crown sealing has been proposed.