由分析结果可知，从风险和经济两方面看来，二滩大坝应用坝下水垫塘保护大坝安全是必要的。
According to the analysis results, it is imperative that the stilling basin below dam is applied to protect dam base from erosion.
本文首次系统地对高拱坝坝身泄洪孔口、泄流过程以及坝下水垫塘的布置优化问题进行了讨论。
The optimization of laying out these structures, paths of flow jets and a water cushion pool for a high arch dam is first discussed systematically in this paper.
小湾拱坝坝身泄洪消能的技术难度已达世界当前最高水平，其水垫塘的优化设计亦是工程中的一大难题。
The technical difficulty in flood discharging energy dissipation of the Xiaowan arch dam body leads the world and its plunge pool optimization design is also a major difficult problem of the project.
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