长江口岸直水道鳗鱼沙心滩头部守护工程局部冲刷水槽概化试验研究———I.水槽概化与护滩建筑物模拟设计

为维持长江口岸直水道下段目前较为有利的滩槽格局和较好的航道条件,在口岸直水道的鳗鱼沙心滩头部进行护滩守护工程,需要研究守护工程周边的最大冲刷深度,以确定边缘压石宽度与重点防护部位,给设计提供技术依据。在分析口岸直水道水流运动特性与泥沙组成特点的基础上,进行了概化水槽的模型设计,提出了采用"流带法"确定水槽边界,确定了最强水流动力、每年可能出现的最大流量、经常出现的流量等试验水力条件。对砂肋软体排、混凝土联锁块软体排、D型系混凝土块排,以及抛石压载等护滩建筑物的模拟进行了设计,为护滩带周边局部冲刷变形试验奠定了基础。

On local scour deformation flume generalization experiment of Manyusha shoal headprotection engineering in straight reach of Yangtze River estuary:I. Design of flume generalized and protection engineering building simulation

In order to maintain the current riffle and pool morphology and advantageous channel condition of straight reach in the Yangtze River,beach protection engineering would be supplied in the head of Manyusha shoal.It is necessary to study the maximum depth of scour surrounding the engineering for design to determine the ballast width of edge and the key ballast parts.Based on the analysis of the hydrodynamic and sediment component characteristics of the channel,the flume generalization was designed,with the me...