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| 黄河下游水沙变化及河床纵横断面的演变 | |
| 引用本文： | 王兆印,周静,李昌志.黄河下游水沙变化及河床纵横断面的演变[J].水力发电学报,2006,25(5):42-45. |
| 作者姓名： | 王兆印 周静 李昌志 |
| 作者单位： | 1. 清华大学,水利系,北京,100084;中国水利水电科学研究院,北京,100044 2. 清华大学,水利系,北京,100084 3. 中国水利水电科学研究院,北京,100044 |
| 基金项目： | 科技部国际科技合作重点项目（2004CB720402） |
| 摘 要： | 近年来，黄河下游来水来沙出现一些新的特点，水沙的变化必然影响下游河床纵剖面和横断面的调整变化。本文利用黄河下游1960-1997年的水沙资料和1977-2002年的断面资料统计分析了黄河下游水沙历年、汛期和脉动变化特点以及主槽平均河床高程和河相系数变化特点。分析表明：1）1986年以后，黄河下游水沙量和水沙脉动量显著减少，艾山以下河流非汛期时常出现断流现象；2）黄河下游纵剖面呈S型发展；3）黄河下游主槽断面面积减小。主槽明显萎缩。 |
| 关 键 词： | 河流泥沙工程学 黄河 来水来沙 纵剖面 河相系数 |
| 收稿时间： | 2005-06-30 |
| 修稿时间： | 2005年6月30日 |
Water & sediment load variation and development at longitudinal & transversal profiles of the lower Yellow River |
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| WANG Zhaoyin,ZHOU Jing,LI Changzhi.Water & sediment load variation and development at longitudinal & transversal profiles of the lower Yellow River[J].Journal of Hydroelectric Engineering,2006,25(5):42-45. | |
| Authors: | WANG Zhaoyin ZHOU Jing LI Changzhi |
| Affiliation: | 1. Department of Hydraulic Engineering, Tsinghua University, Beijing 100084 ; 2. China Institute of Water Resources and Hydropower Research, Beijing 100044 |
| Abstract: | In the past 30 years,the lower Yellow River has been watching obvious variation in water and sediment load,which has caused the readjustment of longitudinal & transversal river bed profiles.This article studies the characteristics of the water & sediment load from 1960 to 1997 and the longitudinal & transversal bed profile from 1977 to 2002 by employing statistic analysis.The main results are:i) Water & sediment load and their fluctuation decreases sharply after 1986.The river is dried up very often in the reach from Aishan to Lijin;ii) The longitudinal profile of the lower Yellow River is developing toward an S shape;iii) The wet area of the stem channel of the lower Yellow River becomes smaller. |
| Keywords: | river sediment engineering lower Yellow River water & sediment load longitudinal bed profile regime coefficient |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |