| 黄河宁蒙段河道水沙输移过程的仿真分析 |
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| 引用本文： | 胡兴林,李文治,蓝永超,王静.黄河宁蒙段河道水沙输移过程的仿真分析[J].冰川冻土,2011,33(2):416-424. |
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| 作者姓名： | 胡兴林 李文治 蓝永超 王静 |
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| 作者单位： | 甘肃省水文水资源局,甘肃,兰州,730000;中国科学院寒区旱区环境与工程研究所内陆河流域生态与水文重点实验室,甘肃,兰州,730000;甘肃省人民政府黑山峡项目领导小组办公室,甘肃,兰州,730000;中国科学院寒区旱区环境与工程研究所内陆河流域生态与水文重点实验室,甘肃,兰州,730000;甘肃省水文水资源局,甘肃,兰州,730000 |
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| 基金项目： | 中国科学院知识创新工程重要方向项目(KZCX2-YW-328); 国家自然科学基金重点项目(90702001);国家自然科学基金项目(931468093)资助 |
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| 摘 要： | 通过建立河道水沙仿真系统模型,系统的模拟了天然状态下宁蒙河道泥沙的输移过程,并与现状条件下该河段泥沙输移过程进行比较.结果表明:龙羊峡和刘家峡水库建成运行后,由于水库拦蓄作用,宁蒙河段入口下河沿站1969-2003年累计减少输沙量25.9966×108t,说明上游梯级水库的蓄水拦沙作用显著地减轻了宁蒙河段的淤积过程.宁...
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| 关 键 词： | 河道水沙输移 仿真分析 过程比较 黄河宁蒙河段 |
The Simulation of Water and Sediment Runoff in the Ningmeng Reach of the Yellow River |
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| HU Xing-lin,LI Wen-zhi,LAN Yong-chao,WANG Jing.The Simulation of Water and Sediment Runoff in the Ningmeng Reach of the Yellow River[J].Journal of Glaciology and Geocryology,2011,33(2):416-424. |
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| Authors: | HU Xing-lin LI Wen-zhi LAN Yong-chao WANG Jing |
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| Institution: | HU Xing-lin1,3,LI Wen-zhi2,LAN Yong-chao3,WANG Jing1(1.Hydrology and Water Resources Bureau of Gansu Province,Lanzhou Gansu 730000,China,2.Heishanxia Project Leading Group Office of Gansu Province People Government,3.Key Laboratory of Inland River Basin Ecology and Hydrology,Cold and Arid Regions Environmental and Engineering Research Institute,Chinese Academy of Sciences,Gansu Lanzhou 730000,China) |
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| Abstract: | Through establishment simulation system model of water and sediment runoffs,the sediment transport in the Ningmeng reach under nature condition can be systematically simulated and compared with the observation.It is found that after the Longyangxia and Liujiaxia reservoirs completing,owing to the retaining effect of the upstream reservoirs,the sediment through the Xiaheyan Station of the reach reduced 25.9966×108 t in total from 1969 to 2003,showing that the blocking sediment function of the reservoirs is obvious.However,water dammed by the Qingtongxia reservoir and the Sanshenggong water gate results in water level rising in front of the two structures and river surface gradient decreasing and then the sediment transport capacity of water obviously reduces.Resulting in the sediment transport capacity decreasing is enhanced by the following factors: sand drifting from river banks,increasing water consumption in the reach and low effective desilting from the Qingtongxia reservoir and the Sanshenggong water gate.It is impossible to change the properties of the river and its tributaries fundamentally,however,through controlling sediment sources,dredging up riverway and building embankments,the sedimentation rate in the reach can be slowed down. |
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| Keywords: | water and sediment runoffs simulation analysis process compare Ningmeng reaches of the Yellow River |
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