黄河内蒙古头道拐断面形态变化及其对水沙的响应

doi:10.11821/xb200905002

地理学报 ›› 2009, Vol. 64 ›› Issue (5): 531-540.doi: 10.11821/xb200905002

黄河内蒙古头道拐断面形态变化及其对水沙的响应

冉立山^1,2, 王随继¹, 范小黎^1,2, 闵石头^1,2, 赵建明³, 张瑞峰³, 曾国平³

1. 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;
2. 中国科学院研究生院,北京100049;
3. 黄河水利委员会宁蒙水文水资源局头道拐水文站,包头014000

收稿日期:2008-12-18 修回日期:2009-03-15 出版日期:2009-05-25 发布日期:2009-05-25
通讯作者: 王随继,博士,副研究员。E-mail: wangsj@igsnrr.ac.cn
作者简介:冉立山(1984-),男,重庆酉阳人,硕士研究生. 研究方向: 河流地貌与河道演变。E-mail: ranlishan@gmail.com
基金资助:
国家自然科学基金项目(40771031)

River Channel Change at Toudaoguai Section and Its Response to Water and Sediment Supply of the Upper Yellow River

RAN Lishan^1,2, WANG Suiji¹, FAN Xiaoli^1,2, MIN Shitou1^1,2, ZHAO Jianming³, ZHANG Ruifeng³, ZENG Guoping³

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,China;
3. Toudaoguai Station,Hydrology and Water Resources Bureau of the Ningxia-Inner Mongolia Reach,Yellow River Conservancy Committee,Baotou 014000,China

Received:2008-12-18 Revised:2009-03-15 Online:2009-05-25 Published:2009-05-25
Supported by:
National Natural Science Foundation of China,No.40771031

摘要/Abstract

摘要：

根据黄河上游位于弯曲—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。

关键词: 中值粒径, 水库, 头道拐断面, 黄河上

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-section to the application of dams built upstream was analyzed. The results showed that the Toudaoguai cross-section change was influenced strongly by the application of upstream dams and armoring happened and extended to the channel down the Sanhuhekou cross-section. Median diameter of sediment particle experienced a three-stage changing trend which was characterized by an increase at first, then decrease and increase again finally, since the joint application of Longyangxia, Qingtongxia and Liujiaxia reservoirs in 1986, the three-stage changing trend has become less obvious than the time period between 1969 and 1986 when only Qingtongxia and Liujiaxia reservoirs were put into operation.

Key words: median diameter, reservoir, Toudaoguai cross-section, the upper Yellow Rive

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): 531-540.

RAN Lishan,WANG Suiji,FAN Xiaoli,MIN Shitou1,ZHAO Jianming,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): 531-540.

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黄河内蒙古头道拐断面形态变化及其对水沙的响应

River Channel Change at Toudaoguai Section and Its Response to Water and Sediment Supply of the Upper Yellow River

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