黄河宁蒙河段来沙量变化研究

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Study on the Sediment Load Variation in the Ningxia-Inner Mongolia Reach of the Yellow River

WANG Yu1， LU Jun2，3 ， WANG Xiaopeng²， CHEN Cuixia2，3， ZHANG Dongqing² （1.Yellow River Conservancy Commission， Zhengzhou 45ooo3，China; 2.Yellow River Engineering Consulting Co.，Ltd.， Zhengzhou 450o03，China； 3.KeyLaboratoryofWaterManagementandWaterSecurityforYelowRiverBasin，Ministryof WaterResources，Zhengzou4，Cina） Abstract：UnderstandingthetrendofsedientloadvariationandfutureprojectiosinteNingxia-InerMongoliareachofteYellwRiver iscrucialforitsanagement.Tispaperaalyedadsummadtecharacteristcsofsedimentadchangesinteainstramdtribtariesofisach，ndidtidteausforthdientductioaracesticsofthdientlodvaationinteginerMongoliareach（196-2）included：adecreaseinsedimentinflo，withamorepronouncedreductioninthemainstem；alterededimentcontributionatietwnasteandtrutaris，showingicreasedproportioaliputfrotrutaries；disticttempoaiflction pointsinsedimentchangesforbothmainstemandtributaries，withecentreductionphasesbeinglargelysychronousand；recentsdiment loadvariationsaproximatelfollalogoaldistrbutioneandrivingfactorsiuencngthesechangesofsdimentifloincluded thedetentionofteainstreamresevoiwateradsoilonservatiomeasuesintetrbutaris，andtevrationofainfallCosidering long-temainllstabiliticicaluctuatiosnddminsgeseirsdienteteapaciyoveri，thissudydisalysisonactualsdimentyieldconditionsduring-22O，byevaluatingreducedsedimentintereptioncapacityandnewlyimpleted conservationmeasures，itisprojectedtatheaalsedimentadatXaeyanStatioonteainstemandaalsdimentiutroterval tributaries will both increase moderately compared to recent levels.

KeyWords： Ningxia-Inner Mongolia reach；sediment load；variation trend；Yellow River

0 引言

黄河泥沙问题世界闻名，泥沙淤积在黄河下游形成地上“悬河”。（剩余9713字）