波、流共同作用下的近底泥沙输移及航道骤淤预报  

Sediment transport under the coexisting action of waves and currents and the prediction of sudden sedimentation in navigation channel

作　　者：罗肇森[1] 

机构地区：[1]南京水利科学研究院,江苏南京210029

出　　处：《泥沙研究》2004年第6期1-9,共9页Journal of Sediment Research

摘　　要：波、流 (包括潮流和风吹流 )共同作用下的输沙机理是波浪轨道速度掀沙与挟沙 ,波浪传质速度、潮流速度和风吹流的合成速度输沙。根据波动水流能量及泥沙运动原理 ,参考窦国仁推导底沙输沙率的方法 ,推导出波浪、潮流和风吹流共同作用下的底沙输沙率公式。对于细颗粒泥沙 ,底沙输沙实质上是近底泥沙 (包括浮泥 )的输移 ;应用本文公式对大风期黄骅港外航道的骤淤进行验证计算 ,得到与天然较符合的结果。另外 ,根据近年的实践 ,改进以前的浮泥输沙公式 ,给出二种输沙的计算模式。本文是作者 1987年以来研究此问题的总结。The mechanism of sediment transport under the coexisting action of wind, waves and tide is sediment-uplift, move and carrying by wave particle orbit velocity and transport by the resultant velocity of wave mass-transport current, wind brown current and tide-current. According to the theory of sediment movement and the energy dissipation of wave-water and referred to the bottom sediment discharge formula developed by Dou in river flow, a formula for calculating bottom sediment transport rate has been derived. The calculated sudden sedimentation amount in the access channel of Huanghua Port by the formula is close to the measured data.Moreover, fluid mud transport formulas derived before have been improved. This paper is a summary concerned this subject since 1987

关 键 词：近底泥沙(包括浮泥)的输移 波、流共同作用 波浪掀沙 浮泥的挟沙力 航道回淤 黄骅港 

分 类 号：TV142[水利工程—水力学及河流动力学]