| 摘要: |
| 三峡水库按175 m方案正常蓄水运行后,处于回水变动区的重庆河段将具有水库和天然河道的双重特性,随着水库运行时间的增长,该河段将呈现累积性泥沙淤积趋势.根据长江寸滩站和嘉陵江北碚站长系列水文观测资料分析,近年来三峡入库泥沙明显减少,而随着金沙江和嘉陵江上游梯级开发的逐步实施,上游大型水库拦沙效益将逐步显现,重庆河段的来沙量将进一步减少,可有效减缓重庆河段泥沙淤积速率,减少淤积总量和边滩淤积,增加三峡水库的兴利库容利用率,有利于重庆河段岸线及水资源综合利用. |
| 关键词: 三峡工程 水库回水变动区 重庆河段 泥沙淤积 |
| DOI： |
| 分类号:TV145 |
| 基金项目:"十一五"三峡工程泥沙研究，"十一五"国家科技支撑--"三峡工程运用后泥沙与防洪关键技术研究" |
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| Impact of incoming runoff and sediment on sediment deposition along the Chongqing reach |
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ZHANG Xu-jin,HE Jin-chao,MU De-wei
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ZHANG Xu-jin,HE Jin-chao,MU De-wei(The Southwest Waterway Engineering Institute,Chongqing Jiaotong University,Chongqing 400016,China)
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| Abstract: |
| When the Three Gorges Reservoir operates at the normal water level of 175 m,the Chongqing reach which is at the fluctuating backwater area will have the dual characteristics of reservoir and natural river.They will present a trend of cumulative sedimentation with the lapse of operating time.According to the statistic analysis of the long term hydrological observation data from Cuntan Station in the Yangtze River and Beibei Station in Jialing River,the sediment transported into the Three Gorges Reservoir has... |
| Key words: Three Gorges Project fluctuating backwater area Chongqing reach sediment deposition |
