| 三峡水库入库推移质输沙特性变化及其原因分析 |
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| 引用本文： | 刘德春,陈新益,王渺林.三峡水库入库推移质输沙特性变化及其原因分析[J].水文,2004,24(3):37-41. |
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| 作者姓名： | 刘德春 陈新益 王渺林 |
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| 作者单位： | 长江上游水文水资源勘测局,重庆,400014 |
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| 摘 要： | 朱沱、寸滩水文站是三峡水库主要入库控制站。通过对朱沱站1975～2001年、寸滩站1966～2001年实测卵石推移质资料分析，结果表明，朱沱站从1991起、寸滩站从1981年起，卵石推移量系统减少，粒径细化，起动流速增加，水沙关系明显变化。河道采砂、水利工程拦沙、水土流失治理是三峡水库入库推移质输沙特性发生变化的主要原因。
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| 关 键 词： | 推移质 卵石 变化 三峡水库 |
| 文章编号： | 1000-0852(2004)03-0037-05 |
Analysis on Changes of the Transportation Characteristics of the Bed Load into Three Gorges Reservoir and Their Causes |
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| LIU De-chun,CHEN Xin-yi,WANG Miao-lin.Analysis on Changes of the Transportation Characteristics of the Bed Load into Three Gorges Reservoir and Their Causes[J].Hydrology,2004,24(3):37-41. |
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| Authors: | LIU De-chun CHEN Xin-yi WANG Miao-lin |
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| Abstract: | Zhutuo and Cuntan gauging station are the main reference points into Three Gorges Reservoir. The survey data of gravel bed load in Cuntan station from 1996 to 2001 and Zhutuo station from 1975 to 2001were analyzed. It was found that the bed load transportation has decreased systemically, the sediment granule diameter has become smaller, the sand starting flow velocity has aggrandized and the relation between flow and sand has changed obviously in Cuntan station since 1981 and Zhutuo station since 1991. Finally, it was concluded that the variations be caused by more sediment excavated from the watercourse and more water works block and keep water and soil from running off. |
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| Keywords: | bed load gravel changes Three Gorges Reservoir |
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