波浪水流作用下疏浚抛泥损失的水槽实验

为了了解在恶劣海况下疏浚弃土的输移规律，在波流水槽中进行了单纯水流和波流联合作用下抛泥损失的模拟实验。实验表明，波流联合作用下抛泥损失率随波高加大的增长比单纯水流作用下损失率随水流速度加大的增长要明显，利用实验资料，估计了悬沙和底沙输沙造成抛泥损失率的分配和抛泥区底沙输移速度，并讨论了以波流场的抉沙能力作为参数分析抛泥损失率与流场动力特性关系的可行性，比较了窦国仁、刘家驹和曹祖德3种波流场的挟沙能力表达式用于这一分析的结果。

Flume Experimental Study on the Loss of Dredging Spoiling Under the Action of Wave and Current

To investigate the transport regulation of dredging spoiling in sever sea state,a simulation experiment for measuring the loss of dredging spoiling under the action of current and co-action of wave and current was carried out in a flume, which showed that the increase of loss rate of dredging spoiling under co-action of wave and current with the increase of wave height was more then that under current action with the increase of current velocity. Based on the experimental data, the ratio between the loss rate of dredging spoiling by the suspending silt to the bed load, the moving velocity of bed load in the spoil area were estimated. To analyze the relationship between the loss rate of dredging spoiling and the hydrodynamic characteristics of the co-field of wave and current, the silt-carrying capacity in the co-field of wave and current was used as the hydrodynamic parameter of fluid field. The feasibility was discussed and 3 formulae of Dou Guoren,Liu Jiaju and Cao Zude for calculation of the silt-carrying capacity were compared in analysis of this relationship.