立波作用下泥沙起动流速的研究

作者：高学平 赵子丹

单位： 天津大学 天津大学

关键词：

分类号：

出版年,卷(期):页码：1991,15(5):9-14

摘要：

本文研究了立波作用下泥沙起动流速和推进波作用下泥沙起动流速,指出立波作用下泥沙起动流速小于推进波作用下泥沙起动流速,通过泥沙颗粒受力分析,利用实验资料,我们给出了立波及推进波作用下泥沙起动流速半径验公式。最后把本文推进波起动流速公式与前人振荡波或推进波泥沙起动流速公式进行了比较。

In this paper, the threshold velocities for sand particles under standing waves and progressing waves were discussed. It was indicated that the critical velocity for sand particles under standing waves is less than the one under progressing waves. The semi—experimental formulas of sand critical velocities under standing waves and progressing waves were presented by analysing the forces on sand particles and using the laboratory test data. Finally comparison was made between the present critical velocity formula under progressing waves and former experimental or semi—experimental formulas.

基金项目：

国家教委高等学校博士学科专项科研基金资助

作者简介：

参考文献：

(1) R. A. Bagnold (1964) Motion of waves in shallow water:Interaction between waves and sand bottom. Proc. Royal Society of London,Series A, Vol. 187,pp1-18． (2) Paul D. Komar and Martin C. Miller (1974) : Sediment threshold under oscillatory waves,Pooc. 14th coastal Eng. Conf., vol. 2,pp756-775． (3) P. J. Rance and N. F. Warren(1968) : The threshold of movement of coarse material in oscillatory flow,Proc, 11th coastal Eng. Conf. ,V.1, pp487-491． (4) R. Silrester and G. R. Mogridge(1971) : Reach of waves to the bed of continental shelf,Proc. 12th Coastal Eng. Conf. V. 2,pp651-667． (5) R. J. Hallermeier (1980) : Sand motion initiation by water waves,Journal of the waterway, Port, Coastal and Ocean Division, Proc. ASCE, V. 106． No. WW3 ,pp299-318． (6) S. Sato T. Ijima and N. Tanaka(1963) : A Study of critical depth and model of sand movement using radioactive glass sand, proc. 8th Coastal Eng. Conf. V. 1, pp304-323． (7) Xie Shi-Len(1981) : Scouring pattern in front of vertical breakwater and their influence on the stability of founditions of the breakwaters, Delft Uni. of Technology, Delft, The Netherlands. (8) A. de Best Eco W. Bijker and J. E. W. Wichers(1971) : Scouring of sand bed in front of a vertical breakwater,Proc. 1st Conf. on port and Ocean Eng. under Arctic Condictions, V.2． (9) A. Watanabe(1990) : Nearshore danamics and beach processes, Coastal Eng. Lab. ,Vni. of Tokyo. (10) 钱宁、万兆惠(1983) ;泥沙运动力学,科学出版社

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