| 长江中下游河道崩岸机理中的河床边界条件 |
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| 引用本文： | 余文畴.长江中下游河道崩岸机理中的河床边界条件[J].长江科学院院报,2008,25(1):8-11. |
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| 作者姓名： | 余文畴 |
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| 作者单位： | 长江科学院 河流研究所，武汉430010 |
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| 摘 要： | 描述了长江中下游河床边界条件对于河道平面变形的影响，介绍了河岸抗冲性分类的研究成果，分析了河岸二元结构对于崩岸影响的2个特点：一是崩岸段河岸断面形态与近岸水流集中冲刷河床相关联；二是根据粘性土层的抗冲性揭示了崩岸过程从量变到质变的间歇性质。
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| 关 键 词： | 崩岸边界条件 河岸抗冲性 近岸断面形态 河岸粘性土层 |
| 文章编号： | 1001-5485（2008）01-0008-04 |
| 收稿时间： | 2007-05-28 |
| 修稿时间： | 2007年5月28日 |
River Boundary Conditions of Mechanism of Bank Failure in Middle and Lower Reaches of Changjiang River |
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| YU Wen-chou.River Boundary Conditions of Mechanism of Bank Failure in Middle and Lower Reaches of Changjiang River[J].Journal of Yangtze River Scientific Research Institute,2008,25(1):8-11. |
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| Authors: | YU Wen-chou |
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| Affiliation: | YU Wen-chou (Yangtze River Scientific Research Institute,Wuhan 430010,China) |
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| Abstract: | Influences of river boundary conditions on planar channel deformation in the middle and lower reaches of Changjiang River are describeds and research achievements on classification of antiscourability of river bank are introduced in this paper. Two bank-failure characteristics of riverbank with double-layer texture structure are analyzed, namely, the cross-section configuration near river bank for the bank-failure reach is close related to river-bed scouring due to flow concentration in bank area, and the intermittence during the bank-failure process from quantitative change to qualitative change is discovered by the analysis on erosion-resist ing capacity of cohesive clay-layer soil. |
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| Keywords: | river boundary conditions for bank failure capacity of erosion-resisting cross-section configuration near riverbank cohesive clay-layer soil of riverbank |
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