根据登盆水库坝址区的地形、地质条件及推荐的柔性坝型,对泄水建筑物的布置进行了综合分析,最终推荐左岸垭口改造为独立式溢洪道方案。初步设计阶段,在满足技术规范要求的基础上,对泄洪建筑物主要结构进行了适当的优化,有效降低了工程施工难度和风险,为工程施工提供了详细可靠的技术指导。 According to the topography, geological conditions and the recommended flexible dam type in the dam site of Deng basin, a comprehensive analysis of the layout of the drainage structures is made. Finally, it is recommended to transform the left bank pass into a freestanding spillway scheme. In the preliminary design phase, the main structure of flood discharging buildings was properly optimized on the basis of meeting the requirements of technical specifications, which effectively reduced the difficulty and risk of construction and provided detailed and reliable technical guidance for the construction.