| 山区下切河流地貌演变机理及其与河床结构的关系 |
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| 引用本文： | 刘怀湘,王兆印,陆永军,余国安.山区下切河流地貌演变机理及其与河床结构的关系[J].水科学进展,2011,22(3):367-372. |
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| 作者姓名： | 刘怀湘 王兆印 陆永军 余国安 |
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| 作者单位： | 1.南京水利科学研究院水文水资源与水利工程科学国家重点实验室, 江苏南京210029; |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 为研究河床结构在下切性河流地貌演变过程中所起到的作用与影响机制,对中国典型下切性河流区域的地貌特征与河床结构发育进行了调查与统计分析.结果表明,当河流剧烈下切使得河谷边坡超过临界坡度后,易于失稳而发生大规模的崩塌滑坡现象,河流演变从而进入下切拓宽阶段.大量边坡物质进入河道,促进了河床结构的发育,能够维持较高的河道纵坡降...
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| 关 键 词： | 山区河流 河道下切 河床结构 崩塌 滑坡 裂点 |
| 收稿时间： | 2010-05-25 |
Mechanism of morphological evolution in incised river and its relationship to streambed structures |
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| LIU Huai-xiang,WANG Zhao-yin,LU Yong-jun,YU Guo-an.Mechanism of morphological evolution in incised river and its relationship to streambed structures[J].Advances in Water Science,2011,22(3):367-372. |
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| Authors: | LIU Huai-xiang WANG Zhao-yin LU Yong-jun YU Guo-an |
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| Institution: | 1.State Key Laboratory of Hydrology-Water Resources and Hydraulic engineering, Nanjing Hydraulic Research Institute, Nanjing 210029, China;2.Department of Hydraulic and Hydropower Engineering, Tsinghua University, Beijing 100084, China;3.Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | Streambed structures are developed in many mountain incised rivers as a result of fluvial morphology.They affect the further morphological process in some aspects such as channel stability enhancement.In order to study the role of the structures in morphological evolution in incised river channels,the landform features and structures were investigated and analyzed in the typical incised rivers.The results show that landslides and avalanches would likely occur due to earthquakes or rainstorms when the valley... |
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| Keywords: | mountain river channel incision streambed structures landslide avalanche knickpoint |
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