堰塞坝漫顶破坏溃口深度变化数值模拟  

A Numerical Simulation of Breach Depth Development due to Overtopping Failure for Dammed Lake Dam

作　　者：何利君[1] 陈昊[2] 杨兴国[1] 周宏伟[1] 霍苗[1] 

机构地区：[1]四川大学水利水电学院,成都610065 [2]四川省水利水电勘测设计研究院,成都610072

出　　处：《中国农村水利水电》2012年第8期126-128,131,共4页China Rural Water and Hydropower

摘　　要：漫顶破坏是堰塞坝的一种主要破坏形式,其本质是漫过坝顶的水流冲刷坝体,在坝体和坝顶形成溃口,随着坝体的冲蚀加剧溃口逐渐扩大,同时两侧土体发生间歇性失稳坍塌。建立在漫顶溃决的基础上,以土力学边坡稳定的理论为基本理论,模拟计算堰塞体溃口深度的数学模型。该模型应用于唐家山堰塞湖的实例分析,模拟结果与实测资料基本一致,进而验证了上述模型的可靠性。The overtopping failure is a major failure mode of dammed lake dam. The flow diffused over the top of the dam erosion, and formed a breach in the dam crest, and the breach become larger while the soil on both sides intermittently. It is on the basis of over- topping failure and the slope stability of soil mechanics, and model a numerical model in order to analyze the breach depth＇s change of dammed lake dams. The model is applied to analyze an instance of Tangjiashang barrier lake, and the simulated and measured data is almost the same, and then verify the reliability of the model.

关 键 词：堰塞湖 漫顶破坏 溃口深度 数值模拟 

分 类 号：TV139.16[水利工程—水力学及河流动力学] TV641.2