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《水利工程-黄河水资源现状对河口地区引水影响及对策（water conservancy project the influence of water resources in the yellow river on water diversion in estuary area and countermeasures ）》由会员上传分享，免费在线阅读，更多相关内容在教育资源-天天文库。
1、水利工程-黄河水资源现状对河口地区引水影响及对策15707（WaterconservancyprojecttheinfluenceofwaterresourcesintheYellowRiveronwaterdiversioninestuaryareaandCountermeasures15707）[Abstract]:theYellowRiverisanimportantwaterresourcesintheestuary,andShenglioilfielddevelopmentandconstruc
2、tionofthe"lifeline",atthesametime,theYellowRiveristhesecondlargestriverinChina,becauseofthegeographicalrelations,andwaterresourcesisrelativelytightRiver,itswaterresourcesutilizationrateisthehighestriver.In1990s,theYellowRiverstoppedrunningforseveralyears,
3、causingseriousimpactsontheestuaryofthelowerreachesoftheYellowRiverandattractedwidespreadattention.Inrecentyears,thewaterresourcesintheYellowRiverhavebeenoperatedbythewholeriverinaunifiedway.Althoughtheproblemofwatercuthasbeeneffectivelysolved,thediversion
4、ofwaterintheestuaryisstilldifficulttoguarantee,andthisshouldbepaidfullattentionto.I.GeneralSituationofwaterresourcesintheYellowRiverTheYellowRiverQinghaiplateauoriginatedinthenorthernfootofBayankalamountainelevation4500Midiyuegouzoncolumnbasin,flowsthroug
5、hQinghai,Sichuan,Gansu,Ningxia,InnerMongolia,Shaanxi,Shanxi,Henan,Shandongnineprovinces(regions),intotheBohaiRiver,5464kilometersinlength,watershedareaof752thousandand400squarekilometers.TheYellowRiverisanimportantwatersourceinthenorthwestandNorthChina,wi
6、thanaturalannualrunoffof58billioncubicmeters,ofwhich55billion900millioncubicmetersareinthemouthofthegardenand32billion300millioncubicmetersintheLanzhousection.MorethanLanzhouandLongmentoSanmenxiarange,runoffaccountedfor75%oftheriver.TheYellowRiverbasinisl
7、ocatedinaridandsemiaridregions,relativelyscarcerainfall,theaverageannualprecipitationis478mm,duetotheimpactofclimate,annualprecipitationchangedgreatlyinthetimeallocatedto80%,65%fromsixtoOctoberprecipitationaccountedforannualprecipitation,precipitationinth
8、eheydayofsevenoreight.60%oftherunoffintheYellowRiverisconcentratedinthefloodseasonforsevenoreightor93months.InordertoslowdownsedimentdepositioninthelowerreachesofthetheYellowRiverRiver,200-24billioncubicmetersofwate
