上游建库后三峡水库航道条件的优化  

Optimization of Three Gorges Project navigation condition

作　　者：甘富万[1] 李义天[1] 邓金运[1] 唐金武[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：《武汉大学学报（工学版）》2008年第1期17-21,26,共6页Engineering Journal of Wuhan University

基　　金：国家重大基础研究发展计划973项目(编号:2003CB415203);国家自然科学基金项目(编号:05050920)

摘　　要：针对三峡水库入库水沙条件改变影响水库蓄水进而改变上、下游航道条件的趋势,提出了通过提前水库蓄水时间的方法对三峡水库航道条件进行优化,但提前蓄水也可能增加泥沙淤积从而加剧变动回水区浅滩碍航.采用一维水沙数学模型,结合三峡水库上游建库引起的来沙变化,首先分析了提前蓄水对三峡水库变动回水区浅滩航道条件的影响,结果表明,在上游建库之后,即使提前30 d蓄水,在三峡水库运行100年内都不会额外增加变动回水区浅滩碍航,在此基础上深入分析了提前蓄水对三峡水库上、下游航道条件的优化作用.To optimize the navigation condition under the change of water and sediment inflow, impounding water ahead of original schedule of the Three Gorges Project （TGP） is necessary. It will not only improve the water current condition for navigation, but also increase sedimentation silting in reservoir to harm the navigation in fluctuating back water area. The influence on navigation condition of riffles at fluctuating back water area under operation of upstream dams is analyzed by using an unsteady 1D model at first; the result demonstrates that impounding water ahead of original schedule won＇t tamper the navigation condition of fluctuating back water area. On the basis of this result, the benefit of impounding water ahead of original schedule to navigation of TGP is analyzed detailedly.

关 键 词：三峡水库 航道条件优化 泥沙淤积 提前蓄水 

分 类 号：TV213.9[水利工程—水文学及水资源]