三峡水库对下游水力学要素的影响  

Influence hydraulic elements of lower reache by Three Gorges reservoir

作　　者：郭清 

机构地区：[1]辽宁省水文水资源勘测局,辽宁沈阳110003

出　　处：《东北水利水电》2008年第9期43-45,55,共4页Water Resources & Hydropower of Northeast China

摘　　要：文章模拟计算了三峡水库建库前后,葛洲坝下游中华鲟产卵场水力学要素的变化,并对模拟结果进行分析。结论表明:三峡水库建坝后各水力学要素,如流速、过水面积、弗劳德数、切应力等水力学参数都有不同程度的减小,从而改变了原有河流生态系统的平衡。根据对2003年后中华鲟产卵次数及数量的观测表明,以上变化可能对中华鲟的繁殖产生一定的影响。The paper has simulated the hydraulic elements downstream the Gezhouba Dam of the spawning ground of Acipenser sinensis before and after the time when Three Gorges reservoir has been completely constructed. After analyzing the simulation results, it has drawn a conclusion that the original balance of ecosystem has been changed after the dam has been completed. The elements, such as velocity, discharge areas, Froude number and shear stress have decreased to different degrees. These changes, according to the observation about the times and quantity of the spawning since 2003, may probably affect propagation of the Acipenser sinensis in some degree.

关 键 词：三峡水库 下游 野生鲟产卵场 水力学要素 

分 类 号：TV13[水利工程—水力学及河流动力学]