Abstract: The Diwei bridge is situated in Damaoxia river reach of Chongqing , and borders on the Diwei cement Co ., Ltd .In order to study that the bridge makes influence on the ability to traveling flood of the Yangtze river , in this paper , 2-D flow mathematical model is used , the calculation achievements tally with actual situationmore better .In addition , the dispose of water-retaining structure at mathematical model calculation is researched theoretically

Key words: ability to travelling flood , mathematical model , water-retaining structure

摘要： 重庆地维长江大桥位于重庆猫儿峡河段，毗邻重庆地维水泥有限责任公司。为预测大桥建成后对长江行洪 能力的影响，笔者采用了平面二维水流数学模型的研究方法，使计算成果更切合实际；同时，笔者还对阻水结构 在数值计算中的处理进行了理论分析

关键词: 行洪能力, 数学模型, 阻水结构