入海感潮河段堵坝对河口淤积特性影响的数值模拟研究  

Numerical simulation of estuary sedimentation characteristics impacted by damming in coastal tidal river

作　　者：蔡武林[1] 万五一[1] 

机构地区：[1]浙江大学水工结构及水环境研究所,浙江杭州310058

出　　处：《水利水电技术》2011年第4期20-22,40,共4页Water Resources and Hydropower Engineering

基　　金：国家自然科学基金资助项目(50709029);中央高校基本科研业务费专项资金资助(2011QNA4014)

摘　　要：通过建立二维水沙模型,采用数值计算方法模拟了某堵坝至潮汐河口4 km之间河道10年内的淤积情况,得到了不同断面的淤积高程,计算结果与物理模型试验相吻合。结果表明:河道整体淤积速度先快后慢,淤积厚度由堵坝位置向河口递增。Through establishing of a 2-D runoff and sediment model, the sedimentation within 10 years of the estuary with the length of 4 km is simulated. The various sedimentation levels at different sections are obtained, and the results from the calculation is well proved by the related physical model test. It shows that the whole sedimentation speed of the estuary is to be from fast to slow along with a successive increase of the sedimentation thickness from the damming location to the outlet.

关 键 词：河口淤积 二维水沙模型 数值模拟 淤积计算 感潮河段 

分 类 号：TV148[水利工程—水力学及河流动力学]