【摘要】 本文以瞬变流模型为基础，在三峡溢流坝断面模型冲坑底部，详细地量测了不同尺寸岩块上的脉动上举力，获得脉动上举力的统计资料，验证了解交流理论的分析成果，为探讨基岩的冲刷机理和水垫塘内混凝土底板块的设计提供了科学依据．更多还原

【Abstract】 The fluctuating uplift forces acting on various size of rock blocks at the bottom of the scour pool are measured in the Three Gorges spillway model. The experimental results agree with the theoretical analysis, which provides scientific basis for mechanism of rock scour and design of concrete slabs in a plunge pool.更多还原