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Scouring mechanism and simulation methods of alluvial rivers
Author(s): 
Pages: 14-19
Year: Issue:  4
Journal: ENGINEERING JOURNAL OF WUHAN UNIVERSITY

Keyword:  冲刷机理模拟方法非粘性土河岸粘性土河岸二元结构河岸;
Abstract: 描述了冲积河流河岸冲刷展宽的力学现象,分别针对非粘性土、粘性土及混合土二元结构3种不同类型的土质河岸,归纳分析了影响河岸冲刷展宽的3类主要因素的力学作用机理,即近岸水流冲刷力、河岸土体抗冲力以及河岸崩塌时的土体临界抗剪强度.另外,还简要分析了采用经验方法、极值假说方法模拟河岸冲刷时存在的诸多局限与不足,着重阐述了不同类型土质的河岸冲刷展宽的水动力学-土力学的模拟方法,并对该领域研究工作的方向及其应用作了进一步的展望.
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