人民长江2018，Vol.49Issue(7)：6-10,5.DOI:10.16232/j.cnki.1001-4179.2018.07.002
童家湖蓄滞洪区洪水演进数值模型研究
Study on numerical simulation for flood routing of Tongjia Lake flood detention area
摘要
Abstract
In order to make more scientific and effective use of Tongjia Lake flood detention area and reduce the loss of flood and waterlogging disaster,we established a flood routing mathematical model for the detention area based on the basic two-di-mensional unsteady flow equations,unstructured triangular grid and 1:5000 measured topographic data of the area by finite vol-ume method. Based on the established model,the flood routing process for the detention area under designed flood diversion con-ditions are analyzed. In addition,the water level and velocity variation process and flooding trend of several typical sites in the detention area are simulated. The results show that in the beginning 2 hours,the flood was mainly detained near the flood diver-sion inlet;in the first 20 hours,the flood was mainly concentrated in the southern part of the flood detention area;20 hours later, the water levels fluctuated synchronously in detention area after the flood filling up the lower floodplain in the northern part of the detention basin. The model can reflect the flooding process of Tongjia Lake flood detention area completely. Furthermore,the rel-evant laws can provide decision-making reference for flood diversion preparation,evacuation in the diversion area.关键词
有限体积/数值模拟/洪水演进/淹没面积/童家湖蓄滞洪区/府澴河Key words
finite volume method/numerical simulation/flood routing/flooded area/Tongjia Lake flood detention area分类
建筑与水利引用本文复制引用
肖潇,麻林,庞爱磊..童家湖蓄滞洪区洪水演进数值模型研究[J].人民长江,2018,49(7):6-10,5.基金项目
国家重点研发计划项目(2016YFA0600901) （2016YFA0600901）
湖北省自然科学基金项目(2017CFB312) （2017CFB312）
