四川大学学报：工程科学版2011，Vol.43Issue(5)：89-94,6.
无粘性土堤漫顶溃决过程初步研究
Study on Overtopping Erosion of Non-cohesive Embankment
摘要
Abstract
Based on the flume experiments with different river discharge,embankment materials and cross section sizes,overtopping erosion process of non-cohesive embankment was investigated.The flume experiments mainly focused on the horizontal expansion and vertical degradation of the breach as well as water level variation of both the inner river and the outer river.Considering the difficulty of monitoring the variation process of discharge through the breach,1-D unsteady flow numerical model was applied to simulate the discharge process based on the flume experiments data.The results showed that the evolution of the breach discharge lags behind that of the water level above the breach,and that the breach width and the water level above the burst gate are the most important factors affecting the discharge through breach.The discharge variation process through the breach gate is consistent with the flow rule of side weir.The investigation results can provide scientific basis for disaster prevention and evaluation of embankment burst.关键词
无粘性土堤/漫顶溃决/流量过程Key words
non-cohesive embankment/overtopping erosion/discharge process分类
建筑与水利引用本文复制引用
梁艳洁,余明辉,魏红艳..无粘性土堤漫顶溃决过程初步研究[J].四川大学学报：工程科学版,2011,43(5):89-94,6.基金项目
国家“973”计划资助项目 （）
国家自然科学基金资助项目 （）
