引用本文:贾晓,胡志锋,吴华林,周发林,唐晓峰.长江口河段柔性护滩结构周边河床冲刷形态分析[J].水利水运工程学报,2013,(2):52-57
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长江口河段柔性护滩结构周边河床冲刷形态分析
贾晓,胡志锋,吴华林,周发林,唐晓峰
1.上海河口海岸科学研究中心;2.交通运输部长江口航道管理局
摘要:
近年来软体排型式的柔性护滩结构在长江中下游水利工程及航道整治工程中得到广泛应用.此类工程实施后，其外缘通常会产生不同形态的冲刷坑.为研究总结分析此类问题，以长江口深水航道治理工程及其上延工程中的固定断面监测资料为基础，对长江中下游及河口地区软体排及其相关配套工程实施后，软体排外缘的实际冲刷情况进行了梳理.尝试根据引起局部冲刷的动力原因，将冲刷坑形态分为沿软体排冲刷槽、绕流冲刷坑和跌流冲刷坑，并具体分析了不同形态冲刷坑的特征及演变过程.
关键词:  柔性护滩  软体排  冲刷坑  冲刷形态  河床变形
DOI：
分类号:U617
基金项目:国家自然科学基金重点项目（50939003）；国家重点基础研究发展计划项目（973计划，2010CB429002）
Local scour near flexible beach protection project in the Yangtze River estuary
JIA Xiao1, HU Zhi-feng1, WU Hua-lin2, ZHOU Fa-lin2, TANG Xiao-feng3
1.Estuarine & Coastal Science Research Center;2.Yangtze Estuary Waterway Administration Bureau;3.The State Key Laboratory of Coastal and Offshore Engineering， Dalian University of Technology
Abstract:
In the past few years， flexible beach protection materials like soft mattress have been widely used in hydraulic and channel regulation projects in the Yangtze River estuary， and local scour holes are associated with the implementation of this kind of projects. In order to summarize and analyze such problems, the Yangtze River estuary′s deepwater channel regulation project and its extension projects are taken as the case studies， and the real morphological shape along with soft mattress projects in the Yangtze River estuary is collected. According to the hydrodynamic causes， the local scour holes are classified as scour hole around soft mattress， scour hole caused by flow around and scour hole caused by drop flow， and the features and evolution processes of different scour holes have been studied in this study.
Key words:  flexible beach protection  soft mattress  local scour hole  scour morphology  evolution of river bed
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