摘要
"蓄清排浑"是协调水库泥沙淤积与兴利矛盾的有效调度方式。长时段、长河段水库泥沙问题的研究目前还主要依赖于数学模型。通过分析当前国内各家模型发现,一定范围内拟定不同运用水位和不同汛后蓄水时间方案,前期淤积总量过程基本一致,但库区泥沙淤积分布和水库后期淤积量却差别很大,对兴利库容影响尤为明显。文中通过研究典型水库淤积过程与运用方式的关系,分析了不同方案运用对水库纵向淤积推进、横断面淤积发展和兴利库容保留程度等的影响,并对水库泥沙数学模型的验证提出了建议。
The scheme of ＂storing clear and releasing muddy＂ is one of the most effective ways to deal with the contradiction between the useful operation and the sedimentation of reservoir. At present, the study on reservoir sedimentation with long period and long river reach mainly relies on mathematical model. Based on the analysis on all the relevant mathematic models at home, it is found that if making the schemes for different operation water levels and different water storage time after flood within a certain area, the total sedimentation processes in the early stage are basically the same, however, large variations are there between the distributions of the sedimentation in reservoir and the sedimentation volumes at the post-flood period, which then have obvious impacts on the useful storages concerned. Through the study on the relationship between the typical sedimentation processes and operation scheme of reservoir, the impacts from different operation schemes on the longitudinal advance of sedimentation, sedimentation development of cross-section and the reservation of the useful storage are analyzed herein, and then some suggestions on the validation of the mathematic model for reservoir sedimentation are put forward as well.
出处
《水利水电技术》
CSCD
北大核心
2008年第3期19-22,共4页
Water Resources and Hydropower Engineering
关键词
“蓄清排浑”
水库淤积
数学模型
水库运用方式
＂storing clear and releasing muddy ＂
reservoir sedimentation
mathematic model
reservoir operation scheme
