水科学进展2011，Vol.22Issue(4)：532-538,7.DOI:32.1309.P.20110709.1622.019
无粘性土堤漫顶溃决水流运动试验研究
Experimental study on overtopping flow of non-cohesive embankments
摘要
Abstract
Correctly describing the flow process near the breach site and the variation of breach discharge is essential to the prediction of overtopping flow and flood propagation, which provide valuable information for breach blocking and disaster preparation, as well as flood damage assessment. Based on the observational result from a series of bend flume experiments, the erosion process during overtopping breaching of non-cohesive embankments can be divided into four stages, overtopping, groove formation, breach stretching and stability. The analysis involves the variation in water levels and flood discharge in the river after overtopping breaching, the water-level difference between the inner and outer river, and the influence of embankment materials on water-level changes near the breach site. Finally, the study summarizes the relationship among the breaching discharge, the breach width and the water head near the site.关键词
无粘性土堤漫顶溃决/弯道水槽试验/溃口处水流形态/溃决流量Key words
overtopping breaching of non-cohesive embankments/ bend flume experiments/ flow patterns near the breach/ breaching discharge分类
建筑与水利引用本文复制引用
魏红艳,余明辉,梁艳洁..无粘性土堤漫顶溃决水流运动试验研究[J].水科学进展,2011,22(4):532-538,7.基金项目
国家重点基础研究发展计划(973)资助项目(2007CB714100) （973）
国家自然科学基金资助项目(11072180) （11072180）
