三峡水库的径流调节作用分析  

Analysis on the Runoff Regulation of Three Gorges Reservoir

作　　者：孙小方 赵军凯[1] Xiaofang Sun;Junkai Zhao(College of Tourism and Geography,Jiujiang University,Jiujiang Jiangxi)

机构地区：[1]九江学院旅游与地理学院

出　　处：《水资源研究》2019年第6期557-566,共10页Journal of Water Resources Research

基　　金：国家自然科学基金项目(41361003);江西省教育厅科技项目(GJJ180903)资助

摘　　要：本文主要是运用Mann-Kendall检验法、不均匀系数、集中度与集中期等方法对三峡水库出入库径流量进行年内分配和年际变化分析。通过对比三峡水库出入库径流量特征,探讨其变化原因,分析了水库的径流调节作用。结果表明:三峡水库运行后,出库径流量汛期(6~9月)减少,非汛期(11月~翌年5月)增加,春冬两季补水显著;径流量年内变化幅度和季节分配差异减小,集中度下降,集中期提前。显然三峡水库运行后对长江径流量年内分配的控制和调节更加有利于中下游防洪抗旱和水资源的开发利用。In this paper,Mann-Kendall test method,non-uniformity coefficient,concentration degree and concentration period were mainly used to analyze the annual distribution and inter-annual variation of the inflow and outflow runoff of the Three Gorges Reservoir(TGR).By comparing the characteristics of runoff in and out of TGR,the reasons for the change were discussed and the runoff regulating effects of the reservoir were analyzed in this paper.The results show that after the operation of TGR,the runoff decreases in the flood season(June to September)and increases in the non-flood season(November to next May),and the water replenishment was significant in spring and winter;the variation range and seasonal distribution of runoff decreased,the concentration ratio decreased and the concentration period advanced.It was obvious that the control and regulation of annual runoff inner distribution of the Yangtze River after the operation of TGR were more beneficial to the development and utilization of water resources and to flood control,drought resistance in the middle and lower reaches.

关 键 词：三峡水库 径流调节 年内分配 

分 类 号：TV6[水利工程—水利水电工程]