水土保持学报2012，Vol.26Issue(6)：57-62,6.
小浪底运行对黄河三角洲水沙变化规律的影响机制
Influencing Mechanism of the Operation of Xiaolangdi Project on Flow/Sediment Variation Rules in Yellow River Delta
摘要
Abstract
Using methods combining statistical data analysis with practice discussion,the flow/sediment data of Lijin hydrological station and the influencing mechanism of Xiaolangdi on flow/sediment variation were analyzed.The results show that: Flow/sediment regulation of Xiaolangdi changes the annual distribution,the beginning phase of flood season advancing to June and the ending phase extending to November,the difference between flood season and non-flood season are getting smaller,the annual distribution of flow/sediment are tending to uniform,but in general,the annual flow/sediment are less 27.4%,72.1%,when compared with that in natural conditions;by adjusting the flow/sediment allocation,the ratio of flow/sediment and incoming sediment coefficient tend to normalize and rationalize(0.01 t/m3,0.01 kg·s/m6),and the flow/sediment combination is improved obviously,which is very significant for maintaining the dynamic balance of the estuary sand spit mouth and coastal in Yellow River Delta(YRD);Xiaolangdi project makes the YRD maintain a certain flow and flood peak(3 000~4 000 m3/s) all the year-round,which restrains effectively the occurrence of flow-break,moreover,sediment composition remarkably coarsens.关键词
小浪底/黄河三角洲/水沙变化规律/调水调沙/影响机制Key words
Xiaolangdi project/Yellow River Delta/flow/sediment variation rules/flow/sediment regulation/influencing mechanism分类
建筑与水利引用本文复制引用
姚前前,李新举,王梅,王雪峰,高国勇,刘永金..小浪底运行对黄河三角洲水沙变化规律的影响机制[J].水土保持学报,2012,26(6):57-62,6.基金项目
国家自然科学基金项目 （）
