长江口深水航道浮泥运移规律及精细化维护疏浚  

Movement law of floating mud and fine maintenance dredging in deep water channel of Yangtze River Estuary

作　　者：汤宇 TANG Yu(Shanghai Hanghong Engineering Management Co.Ltd,Shanghai 200137 China;Yangtze Estuary Waterway Administration Bureau,Shanghai 200003 China)

机构地区：[1]上海航鸿工程管理有限公司,上海200137 [2]交通运输部长江口航道管理局,上海200003

出　　处：《水运工程》2024年第7期89-95,共7页Port & Waterway Engineering

摘　　要：基于2016—2019年长江口深水航道施工区段月度测图和2016—2020年北槽深水航道洪枯季常态天气条件下的浮泥观测资料,研究浮泥输移特征及回淤、高频水深等变化特征,提出航道精细化疏浚维护方案。结果表明,常态天气条件下洪季的高低频水深差幅度大于枯季,北槽航道中段洪季的浮泥厚度要远大于枯季,航道回淤量具有随高低频水深差的增加而增加的特征。建议优先在洪季实施精细化维护疏浚方案,试应用后能有效减小浮泥、高低频水深差等变化过程对航道考核测量和航道维护疏浚的干扰,提高航道维护疏浚的精细化管理水平。Based on the monthly mapping of the construction section of the deep-water channel of Yangtze River Estuary from 2016 to 2019 year and the observation data of floating mud under normal weather conditions during the flood and low season of the deep-water channel in North passage from 2016 to 2020 year the transport characteristics of floating mud the change characteristics of silt back and high-frequency depth are studied and the fine dredging and maintenance plan of the channel is proposed.The results show that under normal weather conditions the depth difference of high and low frequency depth in the flood season is larger than that in the dry season and the thickness of floating mud in the middle part of the northern channel is much larger than that in the dry season and the sediment quantity of the channel increases with the increase of the depth difference of high and low frequency depth.It is suggested that the fine-maintenance dredging scheme should be implemented first in flood season.After trial application it can effectively reduce the interference of floating mud high and low frequency depth difference and other changes on channel assessment measurement and channel maintenance dredging and it improves the fine-management level of channel maintenance and dredging.

关 键 词：长江口 深水航道 浮泥 精细化维护疏浚 

分 类 号：U61[交通运输工程—船舶及航道工程]