长江南京以下12.5m深水航道一期工程白茆沙水道工程局部冲刷试验研究——Ⅰ:模型设计

Model study on local scour in Baimaosha channel project of the first phase of the Yangtze River deep water channel project from Nanjing:Ⅰ. Model design

长江南京以下12.5 m深水航道一期工程白茆沙水道工程局部冲刷研究工作表明:1)采用局部正态模型研究潮汐河口工程局部冲刷问题是可行的;2)试验水力条件的选择、模型边界的确定以及模型的整体变坡等是将局部正态模型应用于潮汐河口工程局部冲刷问题研究需解决的关键技术问题;3)白茆沙水道工程局部正态模型较好地复演了目标试验水力条件,具备开展进一步试验的条件;4)提出了简便易行且效果良好的模型边界确定方法。

Model studies on local scour in Baimaosha channel project of the first phase of the Yangtze River deep water channel project from Nanjing showed that： 1） It is feasible for adopting local normal model to study local scour on project in tidal estuary. 2） Choice of the test hydraulic conditions, determination of model shoreline and total variable slope of model, etc. are the key technical issues to be addressed for adopting local normal model to study local scour on project in tidal estuary. 3） The target test hydraulic conditions are well simulated in the local normal model of Baimaosha channel project and the model can be used for carrying out further tests. 4） This paper presents a simple and good method to determine model shoreline.