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huai he zhong you he chuang dao bi jiang de xing cheng yan bian yu zhi li
Author(s): 
Pages: 237
Year: Issue:  3
Journal: Yantai Teachers University journal(Natural Science

Abstract: 淮河中游河床纵断面倒比降是造成现代淮河中游地区严重洪涝灾害的根本原因 .该倒比降的形成与淮河入洪泽湖河口水下拦门沙的形成与演变及洪泽湖湖底淤高有关 .2 0世纪 50年代以来 ,由于河流输沙量和含沙量不断减少 ,淮河中游上段河床处于侵蚀状态 ,倒比降又有新的发展 .根治倒比降的关键是 ,消除或尽可能减少洪泽湖面在中游河流地貌发育中的基准面作用 .
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