心滩守护工程对航道冲淤特性影响的数值模拟  

Numerical simulation of impact of central bar protection engineering on channel scour and deposition characteristics

作　　者：闫军[1,2] 刘怀汉 岳志远 曹志先[1] 郑力 付中敏 

机构地区：[1]武汉大学水资源与水电工程科学国家重点实验室,武汉430072 [2]长江航道规划设计研究院,湖北武汉430011

出　　处：《水动力学研究与进展（A辑）》2012年第5期589-596,共8页Chinese Journal of Hydrodynamics

基　　金：西部交通建设科技项目~~

摘　　要：为了改善航道条件,往往需通过航道整治工程来稳定心滩。此文建立了基于非结构三角形网格的平面二维水流泥沙数学模型,并与水槽模型实测值进行了率定验证。在此基础上,运用建立的数学模型对不同流量级下的两种不同类型的心滩守护工程进行了模拟研究。研究结果表明,软体排护滩带工程和鱼骨坝工程均可实现对心滩头部的守护和提高两侧航道的水深,但它们所引起的河床和建筑物的局部冲淤特性上存在差异。In order to improve the waterway conditions,the regulation projects are often required to stabilize the central bars.This paper presented two-dimensional mathematical model of water flow-sediment with unstructured triangular mesh,and the model was tested against experimental data.On this basis,a simulation study was carried out with different flow under the two different types of the central bars protection.The results show that both the soft mattress protection and the fish-bone dike protection can make the head of central bar protect and improve channel water depth on both sides.However,their differences that induce river-bed and building local scour and deposition characteristics are revealed.

关 键 词：心滩守护 泥沙冲淤 数值模拟 

分 类 号：U612.32[交通运输工程—船舶及航道工程]