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水电开发对河流水沙年内分配的影响分析

黄英, 刘新有

黄英, 刘新有. 水电开发对河流水沙年内分配的影响分析[J]. 水科学进展, 2010, 21(3): 385-391.
引用本文: 黄英, 刘新有. 水电开发对河流水沙年内分配的影响分析[J]. 水科学进展, 2010, 21(3): 385-391.
HUANG Ying, LIU Xin-you. Impact of hydropower development on annual runoff and sediment transport distribution[J]. Advances in Water Science, 2010, 21(3): 385-391.
Citation: HUANG Ying, LIU Xin-you. Impact of hydropower development on annual runoff and sediment transport distribution[J]. Advances in Water Science, 2010, 21(3): 385-391.

水电开发对河流水沙年内分配的影响分析

基金项目: 云南省水利厅2008年水利科技计划项目(2008y03)
详细信息
    作者简介:

    黄英(1959- ),女,云南墨江人,教授级高级工程师,主要从事水文水资源与水利科学研究.E-mail:swhhyy@126.com

  • 中图分类号: TV213.4

Impact of hydropower development on annual runoff and sediment transport distribution

Funds: The study is financially supported by the Yunnan Water Conservancy Science and Technology Foundation in 2008(2008y03)
  • 摘要: 以中国西南重要的国际河流澜沧江为研究对象,借鉴"基尼系数"的构建思路,建立了水沙年内分配均匀度计算模型,并通过下游水沙与上游天然水沙和区域降水的关系,建立了河流水沙年内分配均匀度回归还原模型。还原结果与实测对比表明:漫湾、大朝山电站建设以来,澜沧江径流年内分配均匀度年均升高1.14%,变幅在-7.32%~10.81%之间,输沙年内分配均匀度年均降低0.23%,变幅在-18.98%~26.76%之间;漫湾、大朝山电站同时运行期间,澜沧江径流年内分配均匀度年均升高3.90%,输沙年内分配均匀度年均降低0.42%;大朝山水电站建设后,澜沧江径流年内分配均匀度升高而输沙年内分配变化不明显,说明大朝山水电建设后河流水沙关系发生了变化,但变化较小。该成果不仅能为相关研究提供方法借鉴,也为水电开发对澜沧江水沙年内分配影响程度的科学评估提供了新的依据。
    Abstract: Based on the conception of Gini coefficient and the relationship between downstream and upstream natural runoff and sediment and the regional precipitation, we establish computational models of annual distribution of runoff and sedmient transport from Lancang River, southwest China.The results from the contrast between reconstructed and measured data show that the annual runoff distribution evenness of Lancang River increases by 1.14% and varies between 7.32% and 10.81%; however, the annual sediment transport distribution evenness decreases by 0.23% and ranges from 18.98% to 26.76% since the construction of Manwan and Dacaoshan hydroelectric power plants, and during the operation period of Manwan and Dacaoshan power plants, the annual runoff distribution evenness of Lanchang River is an increase of 3.90% and the annual sedmient transport distribution evennessis down by 0.42%.After the construction of Dacaoshan hydroelectric power plant, it is shows the trend of growth continuously of the annual runoff distribution evenness of Lancang River, but the annual sediment transport distribution evenness has no sign ificant change.All of these indicate that the interaction between runoff and sediment transport has changed, whereas the change is smoothly.The research results not only can provide a way for the relevant research but also offer new evidence to scientifically evaluate the influence of hydropower development on annual runoff and sedmient transport distribution of Lancang River.
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出版历程
  • 收稿日期:  2009-05-18
  • 刊出日期:  2010-05-24

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