| 近四十年西江磨刀门水道河床演变分析 |
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| 引用本文： | 刘锋,田向平,韩志远,蔡华阳. 近四十年西江磨刀门水道河床演变分析[J]. 泥沙研究, 2011, 0(1) |
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| 作者姓名： | 刘锋 田向平 韩志远 蔡华阳 |
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| 作者单位： | 1. 中山大学河口海岸研究所,广东,广州,510275
2. 交通运输部天津水运工程科学研究所,工程泥沙交通行业重点实验室,天津,300456 |
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| 摘 要： | 将西江磨刀门水道1962、1977、1999年的河道地形图数字化,建立磨刀门水道三个年份的水下数字高程模型(DEM),在此基础上将河道分为上、中、下三段进行了河床演变及其成因分析。结果表明:磨刀门水道1977年前后河道发生过明显的河道冲淤转化;1962年至1977年磨刀门水道处于淤积状态,淤积量达9.92×106 m3,河道上游向窄深发展,下游则向宽浅演变;而从1977至1999年磨刀门水道则处于冲刷状态,冲刷量为25.53×106 m3,河道平均水深增加,逐渐向窄深演变。磨刀门水道河床演变是自然环境变化和人类活动共同作用的结果,其中人类活动的影响最为强烈。
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| 关 键 词： | 磨刀门水道 数字高程 河床演变 人类活动 |
Analysis of river channel evolution of Modaomen channel of Xijiang River in past forty years |
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| LIU Feng,TIAN Xiang-ping,HAN Zhi-yuan,CAI Hua-yang. Analysis of river channel evolution of Modaomen channel of Xijiang River in past forty years[J]. Journal of Sediment Research, 2011, 0(1) |
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| Authors: | LIU Feng TIAN Xiang-ping HAN Zhi-yuan CAI Hua-yang |
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| Affiliation: | LIU Feng1,TIAN Xiang-ping1,HAN Zhi-yuan2,CAI Hua-yang1(1.Institute of Estuarine and Coastal Research,Sun Yat-Sen University,Guangzhou 510275,China,2.Tianjin Research Institute for Water Transport Engineering,Key Laboratory of EngineeringSediment,Ministry of Communications,Tianjin 300456,China) |
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| Abstract: | Quantitative analysis of the characteristics of evolution of the Modaomen channel of the Xijiang River China in the past 40 years is performed with the help of DEM.The Modaomen channel was divided longitudinally into three small sections.Three pieces of charts of the Modaomen channel in 1962,1977 and 1999 were digitized respectively and the digital elevation models(DEM) of the Modaomen channel in different periods were established with Kringing gridding method.Based on them,the evolution pattern of the rive... |
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| Keywords: | Modaomen channel Xijiang River DEM channel evolution human activities |
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