长江中游沙卵石河段坡陡流急现象成因及对策研究(Ⅱ):治理对策探讨  

Investigation on water surface profile in the gravel bed reach of the middle Yangtze River:discussion on countermeasures

作　　者：孙昭华[1] 李义天[1] 李明[1] 张为[1] 

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,湖北武汉430072

出　　处：《泥沙研究》2007年第5期30-35,共6页Journal of Sediment Research

基　　金：国家973项目(2003CB415200)

摘　　要：以芦家河浅滩段为例,讨论了长江中游沙卵石河段坡陡流急碍航现象的治理对策。数学模型对多种整治方案的效果模拟表明,挖槽的横向、纵向尺度不同,其对坡陡流急缓解效率、上游水位下降程度方面存在明显差别。下游水位降幅也对开挖工程量、工程效果及上游水位下降具有重要影响。因此,坡陡流急河段的治理需要综合权衡上下游以及本地河床形态等多方面因素,实现系统整治。With the case of Lujiahe shoal reach, discussion on countermeasures high gradient slope and large flow velocity is presented shows that the effect of dredging project is restricted width of the dredge area, not only the upstream water in this paper. Numerical to the navigation issues related to simulation under different scenarios by its dimensions. With different composition of length and level drop but also the extent of the high gradient and high velocity is different. Additionally, volume and effect of the dredging engineering downstream water level lowering. Considering all these factors, i reach should be proposed on a synthetic foundation including both t is suggested that rely much on the regulation the degree of project of this upstream and downstream reach environment and morphology in the local reach.

关 键 词：沙卵石河段 坡陡流急 治理对策 芦家河浅滩 

分 类 号：TV147[水利工程—水力学及河流动力学]