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 )

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 )

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页数:9页

时间:2018-07-18

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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

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