极端降水条件下土石坝漫坝风险研究
wf（2015）
Abstract
以某水库的挡水土石坝为研究对象,基于随机微分方程推求极端降水条件下电站入库和下泄洪水过程线,并结合不同调节水位、风浪、雍高、是否正常泄洪等因素,采用蒙特卡罗法计算大坝的漫坝风险.结果表明,在正常工况下,土石坝漫坝风险概率几乎都在可接受的10-6数量级内;在泄洪失效工况下,考虑防浪墙的漫坝风险概率几乎在可接受的10-6数量级内,总体偏安全;在泄洪失效工况下,不考虑防浪墙的漫坝风险概率均显著高于可接受的10-6数量级,有漫坝风险.
MoreKey words
earth-fill dam,extreme precipitation,flood hydrograph,dam overtopping,risk
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