| 黄河内蒙古头道拐断面形态变化及其对水沙的响应 |
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| 引用本文： | 冉立山,王随继,范小黎,闵石头,赵建明,张瑞峰,曾国平. 黄河内蒙古头道拐断面形态变化及其对水沙的响应[J]. 地理学报, 2009, 64(5) |
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| 作者姓名： | 冉立山 王随继 范小黎 闵石头 赵建明 张瑞峰 曾国平 |
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| 作者单位： | 中国科学院地理科学与资源研究所,中国科学院陆地水循环及地表过程重点实验室,北京,100101;中国科学院研究生院,北京,100049;中国科学院地理科学与资源研究所,中国科学院陆地水循环及地表过程重点实验室,北京,100101;黄河水利委员会宁蒙水文水资源局头道拐水文站,包头,014000 |
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| 摘 要： | 根据黄河上游位于弯曲一顺直过渡段的头道拐断面的多年实测水文、泥沙数据和断面资料,分析了断面对上游一系列水利工程在时间尺度上的调整响应过程.结果发现,头道拐断面的形态变化强烈受到上游水库运行的影响,在一系列水库投入运行后,河床粗化现象一直持续到三湖河口断面以下.头道拐断面悬移质泥沙中值粒径在水库运行后表现为先增大,然后减小,最后再增大的三阶段性特征,并且自1986年龙羊峡与青铜峡、刘家峡等水库联合运用以后,该三阶段性特征的变化幅度明显较只有青铜峡、刘家峡水库单独运行时段(1969-1986年)小.另外,自1987年以来,头道拐断面河道的横向摆动速率大幅减小,断面形态及位置趋于稳定,有利于当地百姓正常的生活和生产.
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| 关 键 词： | 中值粒径 水库 头道拐断面 黄河上游 |
River Channel Change at Toudaoguai Section and Its Response to Water and Sediment Supply of the Upper Yellow River |
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| RAN Lishan,WANG Suiji,FAN Xiaoli,MIN Shitou,ZHAO Jian ming,ZHANG Ruifeng,ZENG Guoping. River Channel Change at Toudaoguai Section and Its Response to Water and Sediment Supply of the Upper Yellow River[J]. Acta Geographica Sinica, 2009, 64(5) |
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| Authors: | RAN Lishan WANG Suiji FAN Xiaoli MIN Shitou ZHAO Jian ming ZHANG Ruifeng ZENG Guoping |
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| Affiliation: | 1. Key Laboratory of Water Cycle and Related Land Surface Processes;Institute of Geographic Sciences and Natural Resources Research;CAS;Beijing 100101;China;2. Graduate University of Chinese Academy of Sciences;Beijing 100049;3. Toudaoguai Station;Hydrology and Water Resources Bureau of the Ningxia-Inner Mongolia Reach;Yellow River Conservancy Committee;Baotou 014000;China |
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| Abstract: | The application of dams built upstream will change the input conditions, including water and sediment of downstream channel system, and destroy former dynamic equilibrium, so necessary adjustments are demanded for the downstream channel to adapt to the new water and sediment supply, which will lead to the downstream channel to restore its former equilibrium or reach a new equilibrium. Using about 50 years of hydrological, sediment and cross-sectional data, spatial response process of Toudaoguai cross-sectio... |
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| Keywords: | median diameter reservoir Toudaoguai cross-section the upper Yellow River |
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