水沙过程变异条件下黄河口拦门沙的演变响应与调控  

Evolution and control of estuary sandbar in Yellow River responding to variation of flow-sediment condition

作　　者：胡春宏[1] 张治昊[1] 

机构地区：[1]中国水利水电科学研究院,北京100044

出　　处：《水利学报》2006年第5期511-517,524,共8页Journal of Hydraulic Engineering

基　　金：国家自然科学基金重点项目(50239040);水利部创新项目(scx2003-01)

摘　　要：1986年以来,黄河口的来水来沙过程发生了变异,黄河口拦门沙的发育演变经历了复杂的响应过程,对黄河口演变产生了很大影响。本文采用实测资料分析和理论探讨相结合等方法,揭示了黄河口拦门沙区水沙变异特征,分析了黄河口拦门沙的演变响应过程,概化出了黄河口拦门沙立体动态演进模式,探讨了黄河口拦门沙演变响应机理,提出了黄河口拦门沙淤进与蚀退的水沙调控临界指标,为新形势下黄河口拦门沙的治理提供科学的依据。Remarkable variation of coming water flow and sediment took place in the Yellow River estuary since 1986 and the evolution of sandbar experienced a complicated response resulting significant change of estuary. In this paper, the theoretical analysis was combined with observation data to investigate the characteristics of estuary sandbar and its evolution process. The stereopicture of the dynamic evolution process was established and the mechanism of the response was studied. On this basis, the critical indexes for control of the deposition and erosion of the sandbar were suggested accordingly.

关 键 词：黄河口 拦门沙 水沙过程变异 演变响应 蚀退 调控 

分 类 号：TV882.1[水利工程—水利水电工程]