关键词:防　洪安全;水　沙联调;洪　水资源化;调　水调沙;黄　河中图分类号:TV871.　3;　TV697.　1　+　2;　TV882.　1　文献标志码:Adoi:　10.　3969　/　j.　issn.　1000\ue0111379.　2014.　08.　001　New　Characteristics　of　the　Yellow　River　Flood　Prevention　and　Suggestion　on　Optimal　Reservoir　Operation　ZHAI　Jia\ue011rui　(Yellow　River　Conservancy　Commission,Zhengzhou　450003,China)　Abstract:This　paper　analyzed　the　new　characteristics　of　the　Yellow　River　flood　prevention:the　land　surface　change　in　the　Yellow　River　basin　caused　by　human　activities　has　great　effects　on　the　medium　and　small　flood,while　the　impact　on　the　large　flood　is　not　significant;river　channel　oc\ue011　cupied　and　further　shrinking　will　aggravate　the　flood　disaster;Xiaolangdi　reservoir　provides　optimal　space　for　the　water　and　sediment　regulation　in　the　lower　reaches　of　the　Yellow　River,but　the　difficulty　of　scheduling　and　its　corresponding　requirement　is　increasing;the　organization　of　flood　pre\ue011　vention　team　is　difficult,the　capacity　of　flood　defense　is　weak,and　the　task　of　people　evacuation　is　heavy　wh