入海河口闸下淤积机理及模拟技术研究进展

Advances in study of siltation mechanism and simulation technique for channels downstream of sluices in estuaries

从闸下淤积的机理、物理模型试验和数值模拟技术3个方面,概述了对闸下淤积问题的研究进展.针对目前闸下淤积研究中存在的问题,着重介绍了采用概化物理模型试验研究建闸河口闸下淤积的研究成果,提出了建闸河口闸下淤积物理模型模拟的改进方法,在不能取得理想模型沙的条件下,闸下淤积特性试验应以满足闸下河道内淤积泥沙输移特征来确定模型的动力边界条件,并指出下一步要加强潮汐条件下浑水异重流、浮泥运动对闸下淤积的影响研究。

Advances in the study of siltation in the channels downstream of sluices are is reviewed in the aspects of mechanism study, physical model tests and numerical simulation techniques, meanwhile the defects existing in the previous study are summarized and analyzed. Some research results of siltation in the channels downstream of sluices by using generalized physical models are introduced specially. Dynamic boundary conditions of physical models for the study of siltation downstream of sluices should be determined to satisfy the sediment transport characteristics. Finally, the improvement of methods and some key points in further studies are suggested in this paper.