基于二维水沙模型的涉水建筑物防洪影响计算  

Calculation of influence of water-related structres on flood control based on 2D flow and sediment mathematical modes

作　　者：罗秋实[1] 黄鑫[2] 李洪良[3] 刘士和[4] 

机构地区：[1]黄河勘测规划设计有限公司博士后科研工作站,河南郑州450003 [2]华北水利水电学院环境与市政工程学院,河南郑州450011 [3]黄河水利委员会新闻宣传出版中心,河南郑州450003 [4]武汉大学水利水电学院,湖北武汉430072

出　　处：《人民长江》2010年第10期52-55,共4页Yangtze River

摘　　要：基于RSS河流数值模拟系统,探讨了平面二维水沙数学模型在涉水工程防洪影响计算中的应用,并以汉江蔡家湾特大桥为例,进行该工程的防洪影响计算,探讨了不同涉水工程的概化方法。结果表明:采用基于非结构网格的平面二维水沙数学模型,可较为准确地捕捉到涉水工程实施前后河道水力要素变化及河道冲淤变化情况;在所选的计算条件下,拟建工程的实施对工程河段的防洪及河势影响不大。On the basis of River Simulation System（RSS）,we discussed the application of 2D flow and sediment mathematical model in estimating the influence of water-related project on flood control.Taking Caijiawan Bridge as an example,we carried out analysis of influence on flood control,and discussed different methods of generalizing the water-related projects.The results show that the 2D flow and sediment mathematical model based on unstructured grid can capture the changes of hydraulic factors and silting and scouring of channels before and after the construction of water-related projects.And the planning construction of Caijiawan Bridge has little influence on flood control and river regime in the selected calculation conditions.

关 键 词：数值模拟 非结构网格 防洪影响 汉江 

分 类 号：TV87[水利工程—水利水电工程]