摘要
荆江三口是联系长江干流与洞庭湖的水沙连接通道,是江湖关系调整变化的纽带。本文根据三峡工程蓄水前后的实测资料分析了荆江三口分流分沙的变化规律,并探讨荆江三口分流分沙比变化趋势,得到以下结论:三峡工程运用后荆江三口年内分流更集中在6-9月,10月的分流量明显减少,但年分流比变化不大,且沿程河道冲刷引起荆江三口分沙比递增;并预计未来一段时间内荆江三口分流比将基本变化不大,如扣除沿程河道冲刷的影响,则分沙比也基本变化不大。
The three outlets along the Jingjiang River are the waterways linking the Yangtze River and Dongting Lake. Based on the field data before and after operation of the Three Gorges Project, the flow and sediment diversion at the three outlets along the Jingjiang River and the trend of the flow diversion are analyzed. The result shows that the monthly distribution of runoff and sediment diversion will be more concentrated in June to September and less in October, however, the annual ratio of runoff changes little. Erosion along the Jingjiang River causes increase of the sediment diversion. The flow diversion at the three outlets along the Jingjiang River will change little after operation of the Three Gorges Project; if excluding the impact of erosion along the Jingjiang River, the sediment diversion also changes little.
出处
《泥沙研究》
CSCD
北大核心
2014年第1期53-60,共8页
Journal of Sediment Research
基金
"十二五"国家科技支撑计划项目(2012BAB04B03)
西部交通科技项目(CKSD2012393)
中央级公益性科研院所基本科研业务费专项(CKSF2012029)
关键词
荆江三口
三峡工程
趋势
three outlets along Jingjiang River
Yangtze River
Three Gorges Project
trend
