水资源与水工程学报2016，Vol.27Issue(1)：128-135,8.DOI:10.11705/j.issn.1672-643X.2016.01.23
多溃口河网耦合模型在防洪保护区洪水分析中的应用
Application of multi-breach river network coupling model in flood analysis of flood control protection Zone
摘要
Abstract
Aiming at the characteristics of multi-breach of bank in pearl river delta basin under great flood,this paper established a multi-breach one-dimensional and two-dimensional coupling mathematical model in the pearl river delta by taking one-dimensional and two-dimensional unsteady flow basic control equation as theory base.It used weir flow equation to realize the real-time interaction between the river network and the flood control protection zone in coupling position.This model took controlled dike burst way of changeable width to set up parameters,and used local terrain correction's method to deal with the effect of guiding and flowing of water of roads and water culvert in flood control protection zone.It carried out optimization treatment of terrain by setting roughness region and increasing local roughness,applied dry and wet judgment theory to optimize moving border.The verified model was applied to simulate the multi-breach flood occurred at Jiangxinlianwei flood protection zone.The paper analyzed the big difference between the submerge result of flood caused by single-breach flood and that by multi-breach flood.The result can provide important reference for the risk evaluation of multi-breach flood in the pearl river delta and other similar areas.关键词
多溃口/河网/耦合模型/渐变展宽/糙率分区/干湿判别Key words
multi-breach/river network/coupling model/gradual change width/roughness partition/dry and wet judgment分类
建筑与水利引用本文复制引用
苑希民,庞金龙,田福昌,李长跃..多溃口河网耦合模型在防洪保护区洪水分析中的应用[J].水资源与水工程学报,2016,27(1):128-135,8.基金项目
国家自然科学基金项目(51209158) （51209158）
高等学校学科创新引智计划资助(B14012) （B14012）
