长江口南港北槽河床底质时空分布特征分析

doi:10.11870/cjlyzyyhj20161006

长江流域资源与环境 >> 2016, Vol. 25 >> Issue (10): 1520-1527.doi: 10.11870/cjlyzyyhj20161006

长江口南港北槽河床底质时空分布特征分析

张俊勇^1,2, 赵德招¹

1. 河口海岸交通行业重点实验室, 上海 201201;
2. 交通运输部长江口航道管理局, 上海 200003

收稿日期:2015-12-07 修回日期:2016-07-04 出版日期:2016-10-20
作者简介:张俊勇(1977~),男,研究员,博士,主要从事航道规划及河口治理方面研究.E-mail:zjy0796@sina.com
基金资助:
国家自然科学基金项目（51209135）

ANALYSIS OF TEMPORAL AND SPATIAL DISTRIBUTION CHARACTERISTICS OF BEDLOAD IN SOUTH CHANNEL AND NORTH PASSAGE, YANGTZE ESTUARY

ZHANG Jun-yong^1,2, ZHAO De-zhao¹

1. Key Lab of communications on Estuarine and Coastal Science, Shanghai 201201, China;
2. Yangtze Estuary Waterway Administration Bureau, Shanghai 200003, China

Received:2015-12-07 Revised:2016-07-04 Online:2016-10-20
Supported by:
National Natural Science Funds (51209135)

摘要/Abstract

摘要： 在前人研究及大量长时间、连续、大范围河床底质现场采样资料的基础上，对长江口南港北槽河床底质时空分布特征进行了初步分析，并从河床底质的角度对长江口深水航道回淤物质来源进行了初步的探讨。研究表明：长江口河床质具有总体较细、上粗下细以及时空分布不均匀等特点；南港北槽河床质的变化与风浪掀沙、底沙过境、洪枯季变化等因素有关；南港段河床质季节性变化大于北槽；南港河段河床底质有细化的趋势；长江口深水航道回淤物质偏粗且与周边河床质组成相近，航道回淤应关注滩槽泥沙以近底高含沙水流方式的交换。

关键词: 河床质, 长江口, 时空分布, 深水航道

Abstract: Based on previous studies and field data from long-term, continuous and broad-scale sampling of riverbed sediments, in the paper we analyzed the spatial and temporal distribution characteristics of bed load in South Channel and North Passage, Yangtze Estuary. Discussion from the perspective of riverbed source on the deposition material in the Yangtze Estuary deep water channel was carried out as well. Results showed that the temporal and spatial distribution of the bedload materials in the Yangtze Estuary was uneven as well; Riverbed changed with flooding season, wind blowing sand, bedload sand transit and so on; The seasonal variation of riverbed in South Channel was greater than that in the North Passage. The Yangtze estuary deep water channel deposition material partial was much thicker than suspend load and much closer to surrounding riverbed material, the channel deposition should pay attention to the exchange between beach and deep water channel trough high sediment flow at the bottom.

Key words: bedload, Yangtze Estuary, temporal and spatial distribution, deepwater channel

中图分类号:

TV147

张俊勇, 赵德招. 长江口南港北槽河床底质时空分布特征分析[J]. 长江流域资源与环境, 2016, 25(10): 1520-1527.

ZHANG Jun-yong, ZHAO De-zhao. ANALYSIS OF TEMPORAL AND SPATIAL DISTRIBUTION CHARACTERISTICS OF BEDLOAD IN SOUTH CHANNEL AND NORTH PASSAGE, YANGTZE ESTUARY[J]. RESOURCES AND ENVIRONMENT IN THE YANGTZE BASIN, 2016, 25(10): 1520-1527.

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