水资源与水工程学报2016，Vol.27Issue(2)：142-147,6.DOI:10.11705/j.issn.1672-643X.2016.02.26
溃口宽度和倒灌、退水对防洪保护区 洪水演进的影响
Effect of levee-breach width and water intrusion and recession on flood routine in flood protected zone
摘要
Abstract
The paper built 2D model by using finite volume method (FVM) to analyze the effect of water intrusion and recession on levee-breach flood routine in flood protected zone quantitatively. It solved the space discretization and time discretization of calculation region by second-order TVD format and second-order Runge-Kutta method,and quantitatively analyzed the influence of water intrusion and recession on levee-breach flood routine and immerse scope in flood protected zone. The calculated submerged scope of the model is verified. The results show that when the levee-breach width increase 50 meters the flood stor-age quantity of flood protected zone decreases 8 percent. With the increase of breach width, the water level rises, but the maximum water depth does not change significantly with change of time. The change rate of submerged area is less,and the largest submerged area differs by 1. 8%. The effect of water intru-sion and recession is very obvious,the difference between the maximum flood volume and maximum sub-merged area is more than 60%. Water intrusion and recession will cause greater flood losses compared with the increase of levee-breach width in flood protected zone.关键词
溃堤洪水/倒灌/退水/溃口宽度/防洪保护区/二维洪水演进模型Key words
levee-breach flood/intrusion/recession/levee-breach width/flood protected zone/2 D flood routing model分类
天文与地球科学引用本文复制引用
贺新娟,徐国宾,苑希民..溃口宽度和倒灌、退水对防洪保护区 洪水演进的影响[J].水资源与水工程学报,2016,27(2):142-147,6.基金项目
国家自然科学基金创新研究群体科学基金项目(51321065) （51321065）
