岩土工程学报2016，Vol.38Issue(11)：1965-1972,8.DOI:10.11779/CJGE201611005
堰塞坝漫顶溃坝离心模型试验研究
Centrifugal model tests overtopping failure of barrier dams
摘要
Abstract
Centrifugal model tests on dam break due to overtopping are carried out based on the gradation curves of Tangjiashan barrier dam by establishing the correspording physical models, and a method for calculating the rectangular weir flow in the centrifugal field is derived. The overtopping process and mechanism of barrier dam is analyzed deeply, and the failure mechanism is verified by the curve of breach flow and the development of breach top width taken from model tests. The test result show that the breach of barrier dam develops throughout during the whole process of overtopping along the width direction. The development of barrier dam breach along the depth direction, however, stops at earlier time due to the accumulation of large particles in the downstream slope, and coarsening phenomenon in the downstream slope can be observed obviously at the later stage of overtopping. Thus, the bottom part of barrier dam will survive after dam break, and the condition of whole collapse has few cases. In addition, the size of breach remaining will be less than that of the homogeneous earth dam under the same condition.关键词
堰塞坝/漫顶溃坝过程/溃决机理/离心模型试验Key words
barrier dam/overtopping failure/failure mechanism/centrifugal model test分类
建筑与水利引用本文复制引用
赵天龙,陈生水,王俊杰,钟启明,付长静..堰塞坝漫顶溃坝离心模型试验研究[J].岩土工程学报,2016,38(11):1965-1972,8.基金项目
重庆交通大学生国家内河航道整河工程技术研究中心暨水利水运工程教育部重点实验室开放基金项目（ SLK2015B09， SLK2016B07）；国家科技支撑计划项目（2015BAK09B01）；国家自然科学基金项目 （）
