粘土心墙坝漫顶溃坝过程离心模型试验与数值模拟OA北大核心CSCDCSTPCD
Centrifugal model test and numerical simulation of the breaching process of clay core dams due to overtopping
利用作者研制成功的溃坝离心模型试验系统,对粘土心墙坝漫顶溃决过程进行了试验研究,结果发现粘土心墙坝与均质坝溃决机理与溃口发展规律明显不同,随着漫坝水流对下游坝壳冲蚀程度的增加,粘土心墙发生剪断破坏,溃口洪水流量迅速增大.基于上述试验结果,提出了一个描述粘土心墙坝漫顶溃坝过程的数学模型,并建议了相应的数值计算方法.该模型基于不同土体陡水槽冲蚀试验结果,提出了一个模拟漫坝水流对下游坝壳料冲蚀的经验公式,并给出了下游坝壳的冲蚀程度与心墙发生翦断破坏间的…查看全部>>
The centrifugal model test system developed by the authors is employed to study the breaching process of a clay core dam due to overtopping. It is found that there are significant differences in failure mechanisms and the breaching processes between clay core dams and homogenous dams. With increasing erosion by overtopping flow downstream of the clay core dam, shear failure occurs and flood flow through the breach increases rapidly abruptly. Using the …查看全部>>
陈生水;钟启明;曹伟
南京水利科学研究院,江苏南京210029水文水资源与水利工程科学国家重点实验室,江苏南京210029水文水资源与水利工程科学国家重点实验室,江苏南京210029
建筑与水利
粘土心墙坝漫顶溃坝离心模型试验数学模型验证
clay core dam overtopping failure centrifugal model test numerical model validation
《水科学进展》 2011 (5)
674-679,6
国家重点基础研究发展计划(973)项目(2007CB714103)水利部公益性行业科研专项经费项目(201001034)
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