人民长江Issue(3)：13-16,4.DOI:10.16232/j.cnki.1001-4179.2016.03.004
长江口北槽洪季断面流速分布与泥沙输运特性
Distribution of flow velocity and characteristics of suspended transport in cross-sections of North passage of Yangtze River Estuary during flood seasons
摘要
Abstract
To better understand the influence of project constructed in the North passage of Yangtze River Estuary on flow and sediment condition in the area, on the basis of the hydrological and sediment data collected in August, 2009 at 4 cross-sections in the North passage of the Yangtze River Estuary, and by the flux conservation principle and projection methods, the data is uni-fied to the planned cross-section by the temporal and spatial interpolation on a horizontal-uniform-and-vertical –varying mesh. The distribution characteristics of flow structure and sediment transport features are analyzed. The result shows that the Ebb and flow tide of deep trough and side-slopes is asynchronous in that the south slope and north slope reache the high tide be-fore deep trough and south slope and north slope reach low tide after deep trough;the advection transport and tidal pumping effect is the main sediment transport mechanism; for the deep trough and south slope, the suspended sediment transports toward the sea, while the suspended sediment on the north slope transports toward the shore-bank, which is one of the important reasons for the serious deposition on north slope.关键词
水流特征/泥沙输运/淤积/长江口北槽Key words
current characteristics/sediment transport/deposition/North passage of the Yangtze Estuary分类
建筑与水利引用本文复制引用
谢火艳,高敏,王如生,张国安..长江口北槽洪季断面流速分布与泥沙输运特性[J].人民长江,2016,(3):13-16,4.基金项目
国家自然科学基金项目(41376098) （41376098）
